1. Let a big fart rip, then act shocked and look accusingly at fellow passengers as if they did it.

2. Mess around with the handle to the emergency exit, look annoyed when it doesn’t open, and start asking other passengers if they have a crowbar you can borrow.

3. “Accidentally” spill soda on the old woman sitting next you.

4. Discuss cannibalism among airplane crash passengers with the person beside you, then tell him he looks like he would be tasty if roasted well and start licking your lips.

5. Lead the plane in a rousing rendition of the “Oscar Meyer Weiner” theme song.

7. Once you’re in the air, knock on the windows, comment on how tough they look, then ask other passengers if you can borrow a bat to test them.

8. Disco dance up and down the aisles. (This works even better if you sing BeeGees songs loudly while you do it.)

9. Make racecar noises whenever someone walks by you in the aisle.

10. Smack your forehead while grimacing painfully and moaning, "Shut up, will all of you please just shut UP!"

11. Slightly open your carry-on bag, peer inside, and ask: "Have you got enough air?"

12. Bark occasionally.

13. Frown and moan "Gotta go!” a couple of times, wiggle in your seat, then wince and say "oops!"  

14. When the plane begins its descent, start screaming hysterically, “We’re going down!”

15. Play the accordion, alphorn, bagpipe, or other annoying instrument.

16. Hand out leaflets on how to survive a plane crash. Tell people it worked for you on the last flight you took.

17. Make your ringtone on your phone go off when you’re very high in the sky. Comment that you had no idea there was reception up here, then pretend to pick up and have a conversation.

18. Bring an unlabeled bottle full of apple juice on the plane. Start drinking, then say "Ahhh! There’s nothing like urine to quench thirst.” Smile and offer some to other passengers.

19. Spread lifelike toy roaches all over the floor, then start screaming hysterically, “There’s an infestation!” (Watch all the women go crazy!)

20. When the plane starts moving, pull out a handful of nuts and bolts and say “I found these in the engine. Aren’t they cool? I hope they don’t need them!”

Here are a couple I thought of!

Whenever two people make out in the movie, belch really loudly.

If there’s nudity in the film, shout “Hey! They must be really cold!”

1. Use temporary tattoos and wear a leather jacket, then pretend you are a member of a biker gang.

2. Go in the cockpit, turn on the intercom, then loudly ask why the fuel guage says “E.”

3. Sneeze, but use your neighbor’s sleeve instead of a tissue to cover it.

4. Snort loudly when you laugh.

5. Tell cheesy jokes and laugh as if they are absolutely hilarious, then insist others do the same.

6. Turn to the wall and explain in detail your ideas about world domination.

7. Make people read the Kama Sutra and suggest to them, “Let’s try THIS one!”

8. Wear a long, black hooded cloak, stare straight ahead, and in a loud, deep voice announce to the plane, "It is time..."

9. Scream that there’s a spider, then stomp on the ground over and over again while screaming “Die scumsucker die! I hate you! DIE!!!!”

10. Using a magnifying glass, inspect other passengers’ skin very closely, then say "Oh! Look at those pores! Have I got a cream for you!"

11. Sing "This is the song that never ends! Yes it goes on and on, my friends. Some people started singing it not knowing what it was and they’ll continue singing it forever just because… This is the song that never ends!..." over & over.

12. On an international flight, go around the plane and get each person to sing their national anthem in the microphone for the whole plane to hear.

13. Act surprised when the plane takes off and scream "THE GROUND’S FALLING!"

14. Scratch your head excessively saying "Damn lice. They're everywhere! I knew I really shouldn't have run around in that forest so much."

15. Listen to the airplane walls and other passengers with a stethoscope, announcing a dire diagnosis for each.

16. Make name tags for everyone on the plane. Put yours on upside-down.

17. Do Yoga exercises at the back of the plane. Grab the stewardess’s phone and announce to the whole plane that class is about to start.

18. Shake each person’s hand as they walk past your seat.

19. Tell your life story to the person beside you, from the day you were born to that afternoon. (This is especially funny if they are trying to sleep.)

20. Demand Spaghetti-O’s, no matter what kind of meal choices are available.

Har har har

Pinch a stewardess on the butt when she passes you by.

Do a striptease. If anyone objects, tell them you’re honoring your aboriginal roots.

Fake an orgasm in your seat. Announce to your neighbors that it was the best one ever.

Moan, "This new g-string really hurts!" Adjust it, then ask your neighbor if he can help you.

Strip and ask if your butt looks big.

Run up and down the aisles looking panicked and screaming “He has a bomb! He has a bomb!”

Make lots of rude bodily noises in the bathroom and look extremely refreshed when you finally emerge.

Make yourself look especially crude by messing up your hair and crumpling up and untucking your shirt, then go to the first class section and mingle with someone there as if you were friends forever.

Once you enter the bathroom, emerge with your pants down, yelling “Stewardess! There’s no more toilet paper!”

Share all the details of your sex life with the little kid sitting next to you.

Try to start a revolution for equality with first class passengers by leading a revolt against them.

Try to convince other passengers to convert to Hinduism.

Moon passing Air France planes.

Comment that maybe you shouldn’t have dumped all that superglue in your panties that morning, then shift around in your seat looking uncomfortable.

Pick your nose, then shake hands with the person beside you.

Show off your Superman underwear.

Blow your nose, then offer to show your tissue to other passengers.

Blow spitballs at other passengers and stewardesses.

Ask other passengers if they mind if you do your Freddy Kreuger impression, then pull out your claws and a mask.

Pull out your toy gun while shouting at the person beside you "Are you looking at ME?"

Start a “thumb war” with the guy next to you and scream out battle scores for the whole plane to hear.

During the meal, explain loudly that one time you ate frog’s legs
and proceeded to hurl all over the plane, spewing chunks of frog on all the other passengers.

Go in the cockpit and ask the pilot and co-pilot in an immature voice, “Why do they call it a COCKpit?” then laugh as if it is the funniest joke in the world.

“Forget” to use deodorant, then “accidently” shove your armpit in your neighbor’s face.

Listen to Eminem on your iPod and sing along loudly.

With a frantic look, ask the steward where the bathrooms are, then give him a relieved look and say “Nevermind. Are there any towels?”

Yell at a fellow passenger “Is it the time to hijack this airplane yet?” (Best results if you do this while there are stewards there!)

Say to the guy sitting next to you, “It really is amazing they did not notice that grenade I left in my luggage!”

Pretend you are the one flying the plane, complete with added dialogue and sound effects.

Dive, screaming, under your seat but with no apparent reason.

When someone brushes by you, recoil and scream "Bad touch!"

Flail your hands wildly as if there are flies buzzing all around your head.

Try to re-enact scenes from movies where the protagonist climbs out of the roof.

As the flight ends, get emotional and insist on a group hug. Cry and tell other passengers you won’t ever forget them.

Announce loudly in a scary and demonic voice: "I have to find a better host body."  Then look appraisingly at the person sitting next to you.

Stare in dismay at your forefinger and say "Oh no! It's getting larger!"

Stare for a while at another passenger, then scream, "I knew it! You are one of THEM!" then demand the stewardess move you to the opposite side of the plane.

Grin and stare for a while at another passenger, then announce: "I’m wearing new underwear!"

Whistle "It's a Small World" over and over again.

Steal a businessman’s laptop, then play mine sweeper on it.

Lead a Koran study group in the back.

Start a hamburger stand.

Try to get other passengers to buy Girl Scout cookies.

Shave in your seat and ask your neighbors if you missed any spots.

When the plane is packed, moan from your seat: "Oh no! Motion sickness!"

Ask other passengers "What would happen if this plane plummeted to the ground, do you think?"

Sing 1000 bottles of beer on the wall all the way to the end. Try to get other passengers to sing along.

Blast loud mariachi music and sing along, while dancing through the aisles.

Explain how, once, the airplane was crashing but the oxygen masks did not come down, because they really are not reliable, so if the plane were to crash, all the passengers would die.

Ride your hand luggage up and down the aisle, shouting “Yeee-ha!”

Bring along a kazoo and proceed to give 1st class a special show.