How to make a bong

• A plastic coke bottle
• A small piece of piping – 5/10cm
• A socket from a socket set that will fit in the end of the pipe
• A knife

1. Make a hole for the pipe about 1/3 way up bottle and insert pipe so pipe is bending down into the bottle.
2. Put the socket in the end of the pipe outside the bottle
3. Make a smaller hole in the bottle above the first hole
4. Fill bottle with water so that pipe is in water, but water level does not reach the hole.