According to "Sean Connery" (from SNL's Celebrity Jeopardy), horsemen = whore semen.

Horsemen - term meaning "brotherhood", "family" and "life" of a group of people. Often referred to a group of individuals who support a variety of sports, topics, and good times. From Meatheads to Athletic Supporters they ride together and die together. Not to be associated with your "Bad Boys" crew, these fella's live the highlife in only a couple of hours than some do in their entire life-span. Link Words- "Brothers" and "HorsemenStrong"