Calcium Carbide Bomb

• 1 can/bottle of calcium carbide (get at local hadware store, gun shop)
  
• water
  
• 2 liter bottle with cap
  optional:
  
• 1 burning rag
  

Instructions:

• Put in about a hand-full of calcium carbide pellets.
  
• Pour in enough water so that all the pellets are covered.
  
• Put the cap on and run away fast.
  The water and carbide mix to make a gas, building up enough pressure to blow up the bottle.
  
• If you put the burning rag, or some type of flame near it, the gas will produce a big fire ball.
  

Applications:

• imagine flushing calcium carbide down a toilet
  
• cigarettes might ignite the highly flammable gas
  

Special thanx to Death Pod for this recipe.