On Billy goat is when your really religious so you cant say on God so your just say on billy goat
First meaning - Me"On billy goat I am gonna beat yo ass If you touch me!"

Second meaning - Me" On billy goat we gonna rob this bank" friend "On billy goat we are!"
by Simba_goose July 9, 2019
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When a super hot chick bites the longest part of your beard/goatee and gives it a little tug and shake.
Roy: "She billy-goated me"
Brian: "She just clapped on and shocked you like a rag-doll?"
Roy: "Yeah dude, weirdest and sexiest thing ever. You need to grow yours out."
by KikiNJ September 9, 2014
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the patch of hair on a guys gooch.
dude i need to go home and trim up the Billy Goat
by KoryGore666 June 29, 2011
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Troll killer, one who thwarts or denies the trolling attempts of new users on message boards, in Irc channels, or anywhere else trolls are likely to congregate. See "The Three Billy Goats Gruff."
I'm glad we have Jeff in the channel. He's the best billy goat we have.
by MillyQPublic March 29, 2005
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When a man is performing the sexual act of "tittyfucking" by putting his penis inbetween her breasts and then thrusting. When the man is about to ejaculate he makes sure that it he shoots his load onto the womans chin. Which will give her a white goatee like she is a billy goat
Jan loved it when i gave her the Billy Goat because she is an avid animal lover
by Cros1094 June 11, 2010
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A male Cougar... A man who is seven years old than the woman he is with and/or dating he is a Billy Goat(Male version of a Cougar)
That man likes younger woman, he's a billy Goat...
by Reactor11 September 16, 2007
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When a guy puts his penis in between a girls breast and orgasms on her chin; leaving a long white beard of cum resembling a billy goats beard.
Hey bro this chick last night gave me a tit job and I left her with a billy goat!
by Sly McFleezy October 24, 2011
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