What is Buttshroom?
1.
When a large girl wears both a pair of low riding pants plus a belly showing shirt, the look from behind resembles a mushroom hence, ButtShroom
Um, maam, you should consider a more flattering shirt as in that getup you are really just growing a buttshroom.
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1.
3.5 grams of meth or coke
damn, that 8 ball is already gone!
2.
A quantity of cocaine or crystal that weighs an eighth of an ounce, h..