Move your roommate's personal items around. Start subtlely. Gradually work up to big things, and eventually glue everything s/he owns to the ceiling.
Walk and talk backwards.
Chain yourself to your roommate's bed. Get him/her to bring you food.
Get a computer. Leave it on when you are not using it. Turn it off when you are.
Ask your roommate if your family can move in "just for a couple of weeks."
Buy as many back issues of Field and Stream as you can. Pretend to masturbate while reading them.
Fake a heart attack. When your roommate gets the paramedics to come, pretend nothing happened.
Eat glass.
Smoke ballpoint pens.
Smile. All the time.
Spill a lot of beer on his/her bed. Swim.
Whenever your roommate walks in, wait one minute and then stand up. Announce that you are going to take a shower. Do so. Keep this up for three weeks.
Arrange thirteen toothbrushes of different colors on your dresser. Refuse to discuss them.
Paint your half of the room black. Or paisley.
Whenever he/she is about to fall asleep, ask questions that start with "Didja ever wonder why . . . ?" Be creative.
Open your window shades before you go to sleep each night. Close them as soon as you wake up.
Cry a lot.
Send secret admirer notes on your roommate's email.
Clip your fingernails and toenails and keep them in a baggie. Leave the baggie near your computer and snack from it while studying. If he/she walks by, grab the bag close and eye him/her suspiciously.
Whenever you go to sleep, start jumping on your bed . . . do so for a while, then jump really high and act like you hit your head on the ceiling. Crumple onto your bed and fake like you were knocked out . . . use this method to fall asleep every night for a month.
If your roommate goes away for a weekend, change the locks.
Whenever his/her parents call and ask for your roommate, breathe into the phone for 5 seconds then hang up.
Whenever he/she goes to shower, drop whatever you're doing, grab a towel, and go shower too.
Find out your roommate's post office box code. Open it and take his/her mail. Do this for one month. After that, send the mail to him/her by UPS.
Sit on the floor and talk to the wall.
Whenever the phone rings, get up and answer the door.
Whenever someone knocks, answer the phone.
Take his/her underwear. Wear it.
Whenever your roommate is walking through the room, bump into him/her.
Stare at your roommate for five minutes out of every hour. Don't say anything, just stare.
Give each of your walls a different name. Whenever you can't answer a problem, ask each of your walls. Write down their responses, then ask your ceiling for the final answer. Complain to your roommate that you don't trust your ceiling.
Take your roommate's papers and hand them in as your own.
Skip to the bathroom.
Take all of your roommate's furniture and build a fort. Guard the fort for an entire weekend.
When you walk into your room, turn off your lights. Turn them on when you leave.
Print up satanic signs and leave them in your room where he/she can find them.
Whenever you're on the phone and he/she walks in, hang up immediately without saying anything and crawl under your desk. Sit there for two minutes than call whoever it was back.
Insist on writing the entire lyrics to American Pie on your ceiling above your bed. Sing them every night before you go to bed.
Hang stuffed animals with nooses from your ceiling. Whenever you walk by them mutter, "You shouldn't have done that to me."
Lick him/her while they are asleep.
Dress in drag.
Be on the phone 5 hours a day with some hussy in Philly.
Kill a man. Keep him under your bed. Pretend he doesn't smell.
Masturbate regularly a lot and without shame. Tell your roommate you feel it should be more socially acceptable and you are doing your part.
Try not washing. For a semester.
Spend a lot of time
Every time you enter the room, sit in a chair, lean back too far, and fall over backwards. Laugh hysterically for about ten minutes. Then, one day, repeat the falling-over exercise, but instead of laughing, get up, look at the chair sternly, and say, "It's not funny anymore."
Read with a flashlight when the lights are on. Pretend to read without one when the lights are out, remarking every so often how great the book is.
Get a surfboard. Put it on your bed. Stand on it, and pretend to surf for about fifteen minutes. Then, pretend to "wipe out," and fall off the bed onto the floor. Pretend you are drowning until your roommate comes over to "rescue" you.
Keep a hamster as a pet. Buy a blender, and make milkshakes every day. Then, one day, get rid of the hamster. Make a shake using a lot of ketchup. When your roommate comes in, look at the shake, look at the empty cage, and tell your roommate, "I was curious."
Make toast for breakfast every morning, but don't plug the toaster in. Eat the plain bread, looking at the toaster angrily, and complain that the toaster doesn't know what it's doing. If your roommate suggests plugging it in, go on a tangent about fire-safety hazards.
Every time the phone rings, turn on the stereo at full volume and begin to violently slam-dance with your roommate. If he/she asks about it, say, "Oh, that damn hypnotist . . . "
Hang a picture of your roommate on the wall. Throw darts at it. Smile at your roommate often, saying things like, "How nice to see you again."