When a man is doing a girl doggystyle and sticks both his thumbs up the girls ass and hooks both inside so he has a firm grip. While the girl reacts to this, she starts to kick out like a horse and thats where the fun begins...
Last night I gave the girl the time of her life. She even got the bucking bronco!
by Spliff Dog February 21, 2008
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Term used to describe an odd doggy style method. The male leans down over the female during sex then strongly punches the girl twice in the kidneys. The male must hold on while the female tries to "buck off" the guy. Any version of the bucking bronco must be witnessed by at least 2 people. And the record is 26 seconds.
"Dude, I'm taking this bitch I met home and I'm going to do the bucking bronco. I need you guys to witness it!"
by Louis Freese December 10, 2006
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Having sex doggie-style while grabbing her hips, leaning over and calling her by your ex-girlfriends name and trying to hold on while she tries to get away.
I only lasted 10 seconds while doing the Bucking Bronco with with my girlfriend.
by Cuuter May 5, 2010
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This is for the girls:

When you're doing it missionary, and he's about to cum, wrap your legs around his waist and yell, "I wanna be a momma!" And see how long you can hold on.
Susie: "how'd you get that black eye?"
Mary: "I tried the bucking bronco on Joseph last night, and he punched me in the face after 10 seconds. It's a new record!"
by BishopIII July 28, 2011
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The Bucking Bronco is an sex position in which the man mounts the girl from the back, and cups her boobs firmly in his hands and quietly whispers into her ear. "These are almost as nice as your sister's!" The girl will then proceed to buck up and down like a wild bronco. You then time how long you can stay in for.
I decided to try the Bucking Bronco last night on my girlfriend, and she threw me off like a monkey throwing shit!
by Forlorner November 1, 2006
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Sex move in which the girl has pigtails, and you have doggy style sex, then at the peek of the male's orgasm, he whispers into the girls ear, "I have aids" then the male sees how long he can keep it inside.

WARNING DO NOT ATTEMPT, THIS IS A JOKE, IT CAN CAUSE PSYCHOLOGICAL DAMAGE AND OR HAVING YOUR DICK SNAPPED OFF.
No example cuz you shouldn't try the Bucking Bronco if you would like to keep your dick attached to your body
by SAM P AND ZACH K March 5, 2008
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During sex, the male is on the female can be many different positions, and while he's in her, he holds her hands/arms/or anything else to keep her down while he's busy fucking her, then says something like: "I have AIDS," or "your best friend was better," etc. She then tries to get away as fast as she can. As the female is trying to get away, her frantic movement is making his dick go deeper inside her, at a faster rate.
"Last night I tried the whole 'Bucking Bronco' thaang with my lady. I know that's terrible...but, DAMN! It felt so good."
by [SALTY!] Pirate June 6, 2006
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