One of my friends bought one of those 2 gallon chamber industrial style air pumps the other day. we drilled a hole in the side of the chamber and stuck a blunt in there. When you pull the handle out it fills the whole chamber with weed. then you take the blunt out, and put your mouth on the output hose (no innuendo intended), and have one of your friends push down the handle. It blasts a super-omega-huge hit right down into your lungs. We hit it twice each and it was the most high I have ever been.

Granted I was high before hand, but I got that weird high where you spend like 20 minutes trying to figure out if your tripping or what because your skin feels all weird and your brain isnt processing auditory and visual shit correctly/fast-enough.

Anyway, yea, smoke out of a bike pump, it rox. If you have a shitload of weed you can also use it to hotbox the shit out a closet in like 15 seconds, just pump it and it pumps out weed smoke.