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A rowster is a man who has had an operation to remove several ribs for the sole purpose of sucking his own nob.

Metaphorically speaking, a rowster can be anyone who drools over themslves or is constantly sucking themselves off in one way or another.
(1)Hey girlies you wanna check out this rowster porn film, the guy in it can go down on himself!

(2)

dude 1- "I can't stick that egotistical prick, man he's a proper sucker for himself"
dude2- "yeah, the guy's a proper rowster !"
by don138 June 12, 2009
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