Yet Another Answer To That Silly Revenge Problem: Tape Down The Little White Things That Spring Up When You Lift The Receiver.

HomeShort JokesPractical Jokes

Yet another answer to that silly revenge problem:
Tape down the little white things that spring up when you lift the
receiver. (another alternative would be to open up the phone
and remove two little spring things so that the white things don't
come up at all.) Of course all this should be done in the victims
absence.
Now the fun begins...
When he arrives, dial his number from a nearby phone and don't
hang up.

Related: