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The sexual act of dressing a well-fed female in a sheep costume and chasing her around a house and then having sex with her. Howling and bleating are encouraged.
Man I'm tired, I've been sheepdoggin' randos all night.

I can't believe Robbie took me sheepdoggin' on the first date.
by Lorenzo the Luchador April 24, 2011
A verb used to describe agressive male on male homosexual sex.
Person 1: Have you seen my brother lately?
Person 2: I heard he's been sheep-doggin' all over town!
by the CDG August 27, 2007