After performing anal sex, the man pulls out his penis and wipes it across his partners eyebrows, creating one, long shit uni-brow.

Named for the only man to successfully pull it off and at the request of the young lady...Mr. Busby.
Sandra wished all her life for a shit uni-brow...well, Mr. Busby ass fucked her then gave her one....a dirty busby.
by Jbullydawg July 17, 2008
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