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A twafini is a penis. It could also be used when talking about activities during sex.
Hey gurl! I had sex with Devin last night and his twafini was huge! OMG!

Dude! I walked in on Michaela and Devin last night and they were totally doing the twafini!
by twafinilover July 13, 2011
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A twafini is a penis. It could also be used when talking about activities during sex.
Hey gurl! I had sex with Devin last night and his twafini was huge! OMG!

Dude! I walked in on Michaela and Devin last night and they were totally doing the twafini!
by twafinilover July 13, 2011
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Get a Twafini mug for your papa Jerry.