From old spagetthi westerns, where one would "see a man about a horse" when his needs for urinating became to high.
by frakk April 1, 2004
 Get the Have to see a man about a horsemug.
Get the Have to see a man about a horsemug. by Aaron Fielding January 30, 2008
 Get the Go see a man about a horsemug.
Get the Go see a man about a horsemug. by Trixie87 May 28, 2018
 Get the going to see a man about a horsemug.
Get the going to see a man about a horsemug. Something you say when you are leaving in order to conceal your true purpose for leaving especially if you are going to see your drug dealer or going to get high.
Me: Where you going, Brian?
Brian: I'm going to see a man about a horse.
Joe: Hide the snacks...He's gonna have the munchies when he gets back!
Me: Yeah...You wanna go to the bar?
Joe: Yeah
Brian: I'm going to see a man about a horse.
Joe: Hide the snacks...He's gonna have the munchies when he gets back!
Me: Yeah...You wanna go to the bar?
Joe: Yeah
by Open Side September 21, 2009
 Get the Going to see a man about a horsemug.
Get the Going to see a man about a horsemug. by Cheese Steak Killer November 19, 2007
 Get the go see a man about a horsemug.
Get the go see a man about a horsemug.