One who has sex with dudes and/or gets penetrated repeatedly by dudes.
"That flamboyant person has got to be a dudebanger"

"Christina is a dudebanger for sure."
by Skyball1er February 4, 2009
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Synonymous with homosexual tendencies between two males.

Also, can refer to getting schooled or owned in a game or life circumstance.
Oh man those guys are definitely dudebangers!

Aw man that guy just dudebanged me, after I shot at him!

Dude, don't go in that room or you might get dudebanged...

VipMM: Oh man the admin just dudebanged me!
AFB: NO WAY!!
by AFewBullets April 22, 2010
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It is duel purpose term that can be used to express a mans gayness or a woman's sluttiness. Essentially you pointing out that that person has sex with an abundance of men.
Jake: Look at those guys holding hands...
Mike: Fuckin dudebangers.

Sam: I slept with jenny last night.
James: That's not much of an accomplishment seeing as how she's a dudebanger and all...
by S qwerT February 13, 2011
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