Steam Roller

Materials:Cardboard Tube (could be a toilet paper tube),a bowl or pipe,you may need tape or glue

How to Make:

Take the cardboard tube, and make a hole in the side of one end. Take the bowl/pipe, and stick the end into it. When your done it should look like an oversized pipe.

Procedure:

Put your hand over the end that has the pipe nearest to it. Suck from the other end. The end your hand is covering will work as a huge Carb. Light up the pot and suck, when you feel you've filled the cardboard tube full of smoke, let your hand off the carb and it will rush all the smoke into your lungs, it gets you REALLY REALLY fucked up.

This diagram shows the design:

And this is how it could look in real live: