Firecrackers Jokes

My favourite two campus practical jokes:
1. Arrange the light switches in a lavatory and an adjacent room so that
flipping one switch also flips the other. Consider the resultant scene
(visible from the outside just by watching the windows): the room's resident
retires for the evening, turning off his (or her) light. Some time later,
someone else decides to use the head, and turns on the light. After a few
minutes, the resident awakes, decides that someone is pulling a fast one,
and turns the light off... on the guy (or girl) who is by now seated on
the throne! If it works correctly, the two unfortunates end up standing
at their respective light switches, with the lights oscillating rapidly
(by which time the perpetrators are rolling on the ground outside laughing
their heads off).
2. This prank happened a number of years ago. Two guys had been pulling
practical jokes on each other for quite a while. Finally, one of them got
a more...

Cunning Chinese scientists invented fireworks centuries before Francis Scott Key wrote the Star Spangled Banner. Their favorite little sparkler was a plunder-triggered land mine known as

"Underground Sky-Soaring Thunder." Anyone that plucked up the plunder got triggered sky high on a wave of thunder. Floating marine mines were invented by the Chinese in the 14th century, using inflated ox bladders. In this century they have cunningly invented marine "Smart" Mines too, mines smart enough to border on the brilliant.

Actually, they extend a little beyond the border. Chinese Smart Mines can tell the difference between Carriers and Love Boats. They can even spot the X in the plosion where the damage would be the most exasperating. That's pretty sophisticated for a government that pays people to cut grass with stainless steel scissors.

Smart Mines are dangerous even if they don't get loose into the open sea. Recent history tells us that more...