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.
A blank post, with intention of bumping up a thread. Elite fuckers (aka "the cool kids") use it because they believe themselves to be too good for just saying bump, since that's what all the "n00bs" do.
Originated on GaiaOnline, by a girl with the username Hii-kun.
Gaian #1 : Why do those hazy-doppelgangers always make blank bumps?
Gaian #2 : Because they're too cool for you.
Gaian #1 : :(