Top Definition
A form of Rimjob; Sticking ones fingers inside an asshole spreading them open in a circular fashion while licking the outer rim of the ass.
Daytona Boogie was amazed to recieve a tw!ster from his muscular boyfriend rowtimmy.

"Man... my toungue tastes like a dirty asshole... I should'nt have performed a tw!ster last night".
by Marcus Moonshoes July 27, 2006

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