A fork of Rural Dictionary
When you fuck a girl in the open space of your trunk and after you finish, you push her down in the trunk space, slam it shut and drive her home while she's in the trunk.
I gave bridgette a back bumper bust last night, she was so mad.
Back bumper head is when it hits the very back of the throat then the girl makes a soft and sweet gagging sound (It Creates more saliva)
Damn that girl suck a dick. She gave me back bumper head. I just about came down her throat.
Worldwide term for someone’s ass
She’s got a back bumper! Who knew!!