The combination of the first part of dude that makes the do sound and man which is changed to sound mane (like a lions mane) for more effectiveness in speech. Not meant to be derogatory. It can be used as a greeting like "Dude!" or as a replacement for a name (see examples).
Yo, doomane, hand me that purple drank.
Fuck you doomane.
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1.Guy with a mohawk
2.friend of a guy with a mohawk
3.a beaner
What up my dooman. Nice dooman.
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