A science experiment everyone can do

 Hi everybody, today we make a smoke bomb. This experiment is very easy, we only need:

 - Four ping-pong balls

 - Scissors

 - Foil paper

 - Some matches

 - Lighter

 Okay, first, we take three ping-pong balls and cut these into small pieces with the scissors. Then, we take the other ball, make a small hole in this (1 cm diameter) and put into the ball with the hole the other small pieces:

 Later we take the foil paper and surround the ping-pong ball:

 We cut in half four matches and put into the ball, and finally burn the bottom of the structure:

 We finished the smoke bomb, after burn it stay away of the bomb, the smoke is toxic and smells bad. Good luck and don't be bad people! ;D