1 definition by SunDun

Someone who is trying to make a business selling a shady and questionable service or product. He gets some good rep if it happens to work. If it does not do jack, he's got your cash.
''Yo bro this guy has a diet pill that can make me lose 50 lbs in a week, son. I'm totally buying it!''

-''Sounds like a rain man to me. He'll bounce after he grabs your cash.''

-''You just jealous, man."
by SunDun February 27, 2010
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