A genetic disorder caused by the absence of the SRY gene in homo sapiens and other primates thus causing a pair of double x chromosomes to form. Henceforth these individuals develop a front bum. This disorder is not treatable and not having one when one should have one may lead to serious complications.
To quote Sir Mix A Lot "Baby got back," in the front. Therefore the bum looks as if it is attached not only to the back but to the front and the double x person looks the same from the back as the front thus creating a front bum.
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A front-bum is when you need to tuck your gut in the front of your pants...thus making it look like a butt.
Tom: wow look at that chicks ass
Joe: Dude thats a front-bum
Tom: oh man she had to of been there awhile stuffin that beast in.
by Trevor Normington March 12, 2006
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A bum... in the front. Also see: peenub
Keep icing your frontbum! Icing stops the swelling... AND I NEED YOU.
by JBo February 13, 2005
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Someone who has "front bummed" and built a reputation from violent intercourse.

You can refer to yourself as a "front bum destroyer".
I'll destroy that.

I'll then call myself the 'Front Bum Destroyer'.
by apldk March 22, 2013
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Check out the size of that pregnant woman. She must be aching for a front bum poo!
by N8o August 19, 2013
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Pulling ones undies into a wedgie at the front pubic area, particularly with the vagina. This could also be achieved by wearing a G string backwards. It can be used as a loving gesture to ones partner to get a shocking response
"hey darl check my front bum wedgie"
"hey darl bet you never seen this before" (pull a front bum wedgie"
by Bakes Galaxy January 17, 2015
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