Short for horny. When the word "horny" does not properly fit inside of a sentence (or a song lyric for example), the word "horn" can be used as a proper substitute.
Jeremy: Why does Nicholas watch so much porn?
Michael: Obviously, because he's super horn.
1. The act of inserting a funnel into someone's ass and pouring in a liquid, especially if performed with a swirling motion;
2. A sexual act involving a funnel, a liquid, and someone's ass, that may or may not derive pleasure
Hold still! I'm trying to horn swoggle this applejuice into you!
a horn blown when a fat, hairy, or otherwise unnatractive woman is approaching naked. The horn is blown by one of the brave men of the muff guard to warn other MEN of the impending danger.
The sound is somewhere between a cow's moo and a castrated dog being starngled.
When performing oral sex on a female, the performer flattens their mouth around the vaginal opening and blows, resulting in an entertaining release of air from said opening.
Boy, the room sure did smell after I gave Jenny an Alabama Air Horn.