someone who fucks really hard.
She was such a fuckhorse my dick was sore for a week afterwards.
by Anonymous July 17, 2003
someone with exception stamina in sexual intercourse
She is a real fuckhorse, taking ten guys one after another.
by Anonymous April 24, 2003
A guy or girl who really likes to fuck
Boy, Jane sure is a fuckhorse. She's wearing me out
by derek1234 November 06, 2006