Top Definition
This is, quite simply, when you insert a lubed, unrolled condom into someones ass with your finger, blow it up like a balloon inside their ass, tie it off, and then whip it out of their asshole as hard as you can.
It's worth doing a Trojan Donut just to hear the sound it makes.
by lcableguy9002 November 05, 2009
5 Words related to Trojan Donut

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