Little glass pipes you can make or usually buy at tobacco stores (oil burners) that you smoke crystal meth(shit, tweak) out of.
Me (To store clerk): Hey can I get an oil burner?
Clerk: Yes.. (Shows up 2 different kinds of shit pipes)
Me: Nah, let me get the skinner one please.
Clerk: Okay, that will be 5 dollars.
Me: **Thinks to self**....Fuck yah, my other pipe was all burnt and made the shit taste no bueno!
NOTE: Fuckin' stay away from the shit man, TRUST. 60% of the meth you buy on streets ain't even shit, more like toxic leftovers from the production process and crap that ameturs made and THINK is meth.