A reinforced toilet seat for fat/chunky people. Commonly found in trailer parks.
Damn, Aunt Bessie I didn't know you had a dumper-bumper!
Someone who enjoys giving anal sex. Can be a straight male, who likes pounding a hot chic's ass, or a gay male.
Good thing I'm a dumper bumper because my girlfriend is a real ass slut.
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When two cars are parked close enough together that you can rest each a butt cheek on each bumper to take a shit.
Oh man! If i can't find a bathroom i'm going to have to pull a bumper dumper.
To act, or be a queerosexual and or act like the gay, fudge packer Tom Cruise.
In prison don't drop your soap because you could get sexually assaulted by a dumper bumper.