Top Definition
The worthless fat above a womans pelvic area. It is the rather large size roll below her tummy, and while running your hand downward it makes the sound of BLUBUMP!! In order to have sex with a woman wearing a blubump you must first lift it out of the way in order to gain access to the vagina.The un-official name for it is a front-butt.
Man, Look at the Blubump on her!
by CzLap April 04, 2010

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