Here are some ways to really annoy people big time...
Sing the Batman theme incessantly.
Specify that your drive-through order is "to go".
Learn Morse code, and have conversations with friends in public consisting entirely of "Beeeep Bip Bip..."
If you have a glass eye, tap on it occasionally with your pen while talking to others.
Amuse yourself for endless hours by hooking a camcorder to your TV and then pointing it at the screen.
Speak only in a "robot" voice.
Push all the flat Lego pieces together tightly.
Start each meal by conspicuously licking all your food, and announcing its your property.
Leave the copy machine set to reduce 200%, extra dark, 17 inch paper, 99 copies.
Stomp on little plastic ketchup packets.
Leave your turn signal on for fifty miles.
Name your dog "Dog".
Insist on keeping your car windshield wipers running in all weather conditions "to keep them tuned up".
Reply to everything someone says with "That's what YOU think!"
Declare your apartment an independent nation, and sue your neighbors upstairs for "violating your airspace".
Forget the punch line to a long joke, but assure the listener it was a "real hoot".