Green’s Dictionary of Slang

a form of sexual ‘game’ whereby the male of a couple arranges for his friends to jump out from hiding while he is having intercourse; they sound an air horn and he ‘wins’ if he can continue for eight seconds longer before the horrified girl ‘bucks’ him off her body.

1993–2003		G Urban Dict. 🌐 Rodeo Sexual. Surprise a girl during sex with something that would otherwise make her not want to have sex with you, and hold on for as long as possible. One guy gets a girl alone at a party in which his friends are hiding in the closet. During sex, the friends jump out with their dicks out, and the one guy sees if he can hold on for 8 seconds.
1993–2003		Snaggle Bastard Urban Dict. 🌐 Rodeo First of all, it’s very important to hide several of your friends, equiped with one airhorn, in the closet of the bedroom you will be fucking your girlfriend in. Secondly, upon initiation of the doggy-style position you must grab a hand-full of her hair (very important) to prevent yourself from being bucked through the wall. Lastly, you get a good grip and scream out RODEO! @ the same time your buddies jump out of the closet and blast the air horn. Hang on for 8 seconds; and consider yourself a pro. Good Luck Damn dude, I pulled a rodeo on the skanky bitch I was telling you about, and...well...She bucked me through the wall of my parents bedroom. I lost a tooth. fuck.