alright, so theres a U-shaped peice on a trumpet that u can easily slide out. take out the ridiculously bowl-resembling mouth peice and put it in one side of the U-shaped peice (this is your bowl) then just put your weed in there, put ur mouth on the other side, and take a hit. as far as a carb goes, there is a little valve on the bottom called a spit remover that acts as a perfect carb. i know its hard to picture, but just send me PM if you want some pics.
no trumpets are full off all kinds of shit, and the brass or w.e its made of wuld make ur weed taste nasty
Wouldn't do it.. There is all that gunk from saliva, cleaning solutions, etc, and brass isn't good with high temps.