Vinegar and Baking Soad Bomb

what you need:

   * box of baking soda
   * bottle of vinegar
   * small sharp rocks
   * 1 baby food container
   * 1ft long metal piping with caps for ends

what to do:

   * cap one end of the pipe and fill about 1/3 with baking soda
   * place 3 or 4 sharp rocks in the soda
   * fill baby food jar with vinegar and cap
   * place baby food jar carefully into the pipe
   * cap the pipe
   * throw the pipe as hard as you can on the ground on the side with the
     baking soda
   * will explode in less than 5 minutes so get the hell out of there!