(Amusement potential: 1-5 minutes)
This is especially hard, because by trying too much, you remember what you were trying to avoid thinking of. If you try too little, you end up thinking about penguins anyway.
2. Scratch yourself.
(Amusement potential: 1-3 minutes)
Go ahead, scratch yourself now. Even if nothing itches, go ahead. Doesn't that feel pretty good?
3.Rate passers by
(Amusement potential: 1-3 minutes )
Secretly award passers by marks out of ten as you go along, offering (unsaid) expert criticism over their clothing, hairstyle and footwear choices.
4.Try to swallow your tongue.
(Amusement potential: 1-2 minutes)
There's not much to say about this one. It is possible, but really stupid.
5.Make prank phone calls.
(Amusement potential: 20-60 minutes)
Very entertaining, but requires discipline. Remember - vulgarities don't make a call funny, but getting the other person to believe a ridiculous story will. Try seeing if you can get them to make noises to 'test' the line. One to get you started off: Call McDonalds with weird complaints about their food.
6.Burn things with magnifying glass
(Amusement potential: 5-30 minutes)
Ants are always fun to use for this, but burning the face of someone you don't like, under some circumstances, can be just as entertaining.
7. Stare at the back of someone's head until they turn around
(Amusement Potential: 2-5 minutes)
This works on the "I have the feeling I'm being watched" principle. Conduct an experiment-does this really work?
8.Pour water in hand, make sneeze noise, throw water on back of person's neck(Amusement Potential: 5-15 minutes)
Always a good gag. For an even bigger reaction out of the person, act like you're not sorry at all for what they think you did. Comment instead on how big that sneeze was or about how there was a lot of mucus in that one.