it's when you are doing it doggy style and your friends are hiding in the closet...they jump out and yell "SURPRISE!!" and you have to hold on and stay in her for 8 seconds
"Biff and Brad are coming over and we're going to pull the Bucking Bronco on Amy...it'll be hillaaarious, I'll say I didn't know-she won't believe me-and then I won't have the awkwardness of breaking up with her! Perfect plan!"
by Rumford February 8, 2014
Similar to other definitions, the bucking bronco is when you are fucking your girl doggy style, you then make a smart comment(ex. "I have AIDS" or "Your sister was better" and see how long you can stay on for.
You are banging a random chick you met that night, doggy style. While it's all goin on you whisper in her ear,"I have AIDS," then let the ride begin and see how long you can stay on that bucking bronco for.
by Erik June 18, 2006
The new, upcoming trend brought on by the younger generation. It involves one male thrusting a random male to the ground, then jumping on him and doing it from the back very quickly, until the other person fights back.
by Dantechunkers March 7, 2012
your all wrong. you see its when your fuckin a girl real hard and your gettin her from behind and all of a sudden you fish hook her with your middle fingers right. then you scream out her name and tell her how good it feels but you call her the wrong name. then she starts goin wild and starts buckin tryin to throw your ass off but you hang on for your life enjoyin the ride and throwin that one hand up.
by James Gaetano May 26, 2008
When you are doing doggy style during sex, you reach over and grab hold of the womens shoulders. After you tell her you have Aids or STD's and you ride her untill she can get you off, looking like an angry bull.
When Burock told his girlfriend Felica he had Aids during doggy style she tried to fight him off looking like a angry bull. or also known as bucking bronco
by Phillip Rosen B April 15, 2008
A sex act where a woman is laying flat on her chest while a man is having anal sex with her. Then he has to put both his hands secured in a place he can grasp on to the woman. He the procides, as he is in "action", to whisper in the woman's ear "I have Aids". If proformed correctly, the woman will try to shake the man off her by trying to jump up. The man shood try to stay on for the full effect. Don't use unless you plan to break up with the girl.
by Jesus M. Christ November 26, 2007
NOUN. When a girl is on top riding the man, and he grabs her by the waist, his buddies open the door and start cheering. It is at that moment when the girl will try to get off. The man will then see how long he can hold her on.
by Purple Sticky Punch November 3, 2009