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1.
A more polite method of informing people you have to go number two.
Excuse me for a minute, I need to go talk to a man about a horse.
by asixe April 05, 2006
 
2.
what you say when you're walking away to take a piss.
I'm gonna go talk to a man about a horse. I gotta talk to a man about a horse.
by knightmare36 November 29, 2007