Used to insult a person. Refers to someone who would try to consume magic mushrooms through their anus, usually because they are retarded.
Rennie : wtf is a bum shroom?!
joanne says: i dont know : (
Rennie says: ud have to be on shrooms to think that was a real thing
joanne says: but i like it actually ! i just invented a legendary insult "here you ya fuckin bum shroom!"
joanne says: i dont know : (
Rennie says: ud have to be on shrooms to think that was a real thing
joanne says: but i like it actually ! i just invented a legendary insult "here you ya fuckin bum shroom!"
by tripper1988 March 30, 2010