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 Warthriller 'Bulletproof'.
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.
A slut who just likes to fuck, doesn't matter where or who, she just likes a fat cock, not necessarily in da pooper, it just sounds better to call her a "buttwhore"