read a great book! a book you've been meaning to read for a long time! that way, jerks (like me) will leave you alone so you can have a nice, quiet flight...;-) stay safe and enjoy your flight..and your summer!
Repeatedly kick the persons seat in front of you, eat, sing really loud, walk in on people in the bathroom and say: jus wondering is there a snake about 5 feet Long in there? And just get up and walk around, stop and stare at someone for like 10 seconds then walk away.
When you board the plane, tell the stewardess you would like a glass of water right after the "fasten seatbelt" light have gone off after the take off, because you need to take a pill against air sickness. Then, after take off, before she has time to bring you the water, get up to the panel with the light buttons and AC outlets above your seat, press a button and speak loud and clearly into the AC nozzle: "A glass of water please!". Then wait until she brings you the water, after which you can enjoy watching the other people ordering drinks talking into the AC. :-)
Pack your carry-on with everything you need to sleep! Check out Magellan's Travel Supplies as they have a great selection of flight comfort accessories to help drift off during that long (or short!) flight: www.magellans.com