2. Pretend you're a car
Zoom down the sidewalk making car noises and holding your pretend steering wheel.
3. Make prank phone calls
Try to get the person on the other line to make funny sounds to "test the line". Once you get going, call McDonalds and complain about their food.
4. Pinch yourself
...Well it's better than nothing!
5. Repeat a word
Pick a word and say it over and over until it's nothing but a meaningless sound.
6. Make yourself as nauseus as possable
Really, I don't highly reccomend this one but I know some people would do it. Look up and down really quick, and spin till you can't stand up.
8. Stare at someone
Stare at the back of someone's head until they get the, "I'm-being-watched-feeling" and turn around.
9. Fake sneeze on someone
My favorite! Put some water in your hand, then stand behind someone. Pretend to sneeze and throw the water on their neck. To piss them off more, don't apologize, comment how big and snotty your sneeze was.