when a male ejaculates and lets his mess dry on his wang and lets a girl lick it off
John's sister gave me the best crusty banana I have ever had
by Wren the mass penatrator April 27, 2008
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crusty banana fluff is when you grind up cornflakes into little pieces and sprinkle it up your bum.
Jesus: please can someone lick up my crusty banana fluff?

Graham Norton: i can take care of that.
by Mr. Wibble May 1, 2008
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