A buckin bronco is when your friends hide in a closet in a bedroom. You bring your chick upstairs into the same bedroom and start fucking her as your friends listen in and/or watch. You when get her in doggy style you say a trigger word like "sweet" something that is not out of the norm for sex. When your friends in the closet hear this they jump out screaming and one times how long you can ride her as she is trying to buck you off
Brad Pitt and his friends did the buckin bronco to Angelina
7👍 3👎