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A sexual act during the middle of intercourse. In the doggy position, you lift the a females leg and ejaculate into the skin between the joint on the backside of her knee. Then you proceed to squeeze her leg shut and lick any liquid that comes out. It can be quite tricky to perform.
Hey John, Kaitlyn was so drunk last night that I performed a bulgarian donut and she didn't even notice!
by ghostlychain January 15, 2011
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