Top Definition
You start by going doggy style and then just when she is really enjoying it, you grab her tits as tight as possible and yell another girls name. This gives you the feeling of riding a wild bronco as she desperately tries to buck you off.
by tnt May 01, 2003
A sexual act for young adventurous guys
While having sex in the doggy style position, grab hold of the girls pony tail tightly and as you are about to climax shout out the name of her best friend. You have to try and stay mounted to her as she twists, turns and bucks like crazy to try and get you off her.

There is usually no way back in a relationship if you are foolish enough to try this with a serious girlfriend. Make sure you have no intention of maintaining a friendship with this woman afterwards.

Some guys have actually found themselves in court on charges including battery and rape after some of the recipients of a "Bronco" have felt humiliated and abused and sought revenge. In court a woman has the right to say "No/stop" no matter how far along in the sexual act they are, so just a word of warning if you think this sounds hilarious!
by Che_G February 23, 2011
a horse that is not trained to allow riding and and responds to riding in a dangerous and unpredictable manner (borrowed by cowboys from a Spanish word meaning rough or coarse)
The bronco threw the would be cowboy to the ground.
by The Return of Light Joker November 03, 2008
for a girl to facesit a guy, pulling his face into her pussy and reaching back to yank his cock
I think I teased her too long last night. Once we got to my house she threw me on the ground and broncoed my face.
by Rod X February 14, 2014
A term used for a person who got into something that they don't belong in. Such as when a person who is really bad at Football gets onto the Varsity team even though they're not that good and belong on the JV team, they just got onto varsity because they paid a lot of money or something. The term is a reference to how Boise State gets into BCS bowls even though they play nobody.
-Why is John our starting quarterback? He can't make a pass to save his life against those really good linebackers!

-Well of course he's the starting quarterback, he's a Bronco.
by Numbuh 18 February 01, 2011
Stand on a play park swing. While swinging jump off and kick the back at the same time to keep it swinging round the bar. Try to make it swing round till it wraps at the top
'lets go bronco the swings'

'bet you can't bronco it to the top'

'if we bronco the swings to the top no little fuckers will be able to get them back down'

'Simon and Nick kept broncoing the swings so the council took them away. Lets go beat them up'
by bennythescot August 20, 2009
A bronco is, when doing a chick in the ass, you grab her tits, bend over and whisper in her ear that you have AIDS. You then ride her for as long as possible.
Your mother's bronco really got me off.
by TrueIrony March 23, 2006
When you're doing a girl in the ass and just when you're about to come you whisper in her ear, "I have AIDS". Just try to hang on as long as possible while she tries to buck you off. WOOOHOOO!
Brittany and I were going at it when I pulled out the bronco. God what a night.
by Cleary February 23, 2006

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