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1) A bum troll is a medical condition by which the affected person becomes aroused by pulling on the anal hair until it stands straight making the shape of a trolls hair.

2) A bum or homeless person with troll like hair.
1) Man I walked in on your Grandma taking a wicked New Jersey last night and she was bum trolling out of control. Multi-talented...nice!

2) Person A: Dude that bum troll keeps trying to sniff my fingers...

Person B: Man just let him! Bum trolls are people too.
by spackjackson October 08, 2008
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A man with a bum for a face, that is also small, and hairy.
" i had to sit next to a bumtroll on the bus"
by Ballard!!! June 28, 2005
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