A position similar to "reverse cowgirl", the female mounts on to an erect penis while on a school bus. Then, as the bus preceeds to hit bumps along the road, she commences the bus fucking.
Verb.
Verb.
I bucked her on the way to basketball game." or "Damn son! Get off my lap or prepare for the best bucking of your life.
by Big Buckaholic March 30, 2011