Top definition
The term for people who enjoy assorted items placed into their rectum and anal passage. These people most often have names starting with T or L and can be found spending quality time with each other wondering what it would be like to have sex. Inevitably, the longer the decoy lasts, the more likely there will be a new employee placed into the vacant position. Get amongst it and pray for us.
Gee, look at that fucker in the gimp mask, I bet he's a fisty bun.

My name is Terry and I am a fisty bun. It has been 3 weeks since Ive had a fisty bun session. My goal is to insert a roll of glad wrap and re use it as a drop sheet.

(Shitstain)
by Prada Fart Flex May 19, 2017
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