Top Definition
n. (1988)
A pejorative term used mostly in fight scenes. It is likely a variant of butthole. Coined by Gary Busey's character Frank McBain in the Cold War thriller 'Bulletproof'.
"Your worst nightmare, butthorn!"
"Bird season is over, butthorn!"
by The WZA May 06, 2008

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1.A derogatory term used to describe a douche in kid friendly words.

2.A kick ass Gary Busey line thats is fun to say under the influence of marijuana.

3.one who horns butts.
"Dude,...You're a butt horn."
by ME_dude April 15, 2010

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An extremely loud fart, sounding much like a trombone. By varying the tension of the anal sphincter, a skilled butthornist can change the pitch of the resulting notes over a full octave.
Billy blew the butthorn, he blew it long and loud.
It made a great impression on the women in the crowd.
Some peed into their purses. Some peed upon their hands.
And Billy got invited to play in many bands.
by Rumpleforeskin22 December 04, 2013

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Similar to a shoehorn but instead of being used for slipping on tight shoes, it is used to stretch tight pants over fat bodies.
Damn, Addison, did you see that chick with the cake top? (See cake-tops: exceeding "muffin-tops") She must have used a butthorn to get into those jeans
by Thom Ascott April 01, 2016

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1. (noun) Derogatory term created by combining the words bullhorn and butthead that implies that one is a talking butt, amplified by a bullhorn. First coined by Gary Busey in the movie "Bulletproof"
2. (noun) Derogatory term created by combining the words bullhorn and butthead that implies one is the equivalent of amplified flatulence. First coined by Gary Busey in the movie "Bulletproof"
I'm your worst nightmare, butthorn!
Bird season's over, butthorn!
by Gumby1.0 March 29, 2011

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When a nice person, usually sweet and caring, says this, It is a form of endearment. They think you are being silly.
I'm not silly, you butthorn!

ARE YOU MAKING FUN OF ME?! YOU BUTTHORN!!! TEEHEEE!!
by Lemoney Snikster January 06, 2010

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