Try This One Out Sometime. While The Victim Is Asleep Carefully Put Vaseline Between His/her Toes.

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Try this one out sometime. While the victim is asleep
carefully put Vaseline between his/her toes. What you will
obeserve is the person's toes starting to wiggle. The
apparent mechanism is that when your toes start slipping against
each other, your mind insists on making them slip and slide
more and more. The upshot of this is that the part of the mind
that's supposed to be getting rest is busy moving toes. The
victim wakes up having had no sleep at all.

How 'bout this: if the victim uses Head 'n Shoulders or Selsun
Blue shampoo, and a few drops of methylene blue (available in pet stores)
to a FULL bottle. Over time (if the victim is fair-haired), you will
notice their hair turning blue, as methylene blue stains all organic
material.

Also writing things on someone's back with indellible ink is pretty
good. Use your imagination. "Laugh, but don't tell me about it." is a
pretty good one.

Get a group of people to chip in 1 or 2 bucks, and bet the victim the collected
sum that he or she can't put a cue ball in his/her mouth. Hint: cue balls
go in, but they don't come out. In fact, medical science has developped a
tool to aid in the removal of cue balls.

Take doors. Just take them off the hinges and put them somewhere else.

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