When a man covers himself in "I cant believe its not butter" runs on a tile floor and rams his dick into the female. Much like a billy goat would ran its horns,
Billy S needed to go to the hospital after a rough slippery billy goat
by Dyl Ketz March 11, 2014
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The phrase "baptising a billy goat" is a phrase used mostly in the Southeast part of the United States. It is used to describe a useless activity that will produce no meaningful results. It is often concluded with the phrase "It's trouble for nothing."
John got caught red-handed with his bestfriend's girlfriend. Trying to convince his friend that he didn't mean anything by it was like "baptising a billy goat. It was trouble for nothing.
Or
Trying to get Dick Cheney to join the ACLU would be like baptising a billy goat. It's trouble for nothing.
by Bubba Hussein Ledbetter May 20, 2009
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Another meaning penis or the male genitalia.
Suck my billy goat, Get on my billy goat
by Lustful Sail0r August 20, 2009
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The curse that prevents the Chicago Cubs from ever winning the National League Pennant. Contrary to what a previous user wrote, the curse began in 1945 when a tavern owner tried to bring his pet goat into Wrigley Field during Game 1 of the World Series because it was a good luck charm. Security didn't allow it and as they escorted him out he declared that the Cubs would never again win the pennant. And they haven't.
"Did you hear Sammy Sosa hurt his back while sneezing?"
"Yeah, it must be that billy goat curse again."
by NYandwhat December 21, 2004
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Verb. The act of cradling a males balls and jerking him off as his shit runs smoothly down your chin.

This morning, Kelly had shit all over her chin. She must of have given a Mexican Billy Goat to Louis last night.
males jerking off balls shit Mexican Billy Goat
by K-Fed 13 March 17, 2010
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The sticky residue around the chin area left behind after a man thrusts his penis back and forth between a woman’s breasts.
“My boyfriend titty fucked me last night. I showered and must have missed under my chin. He gave me a sticky billy goat!”
by Bad Birl July 31, 2019
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