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Covering someone in a blanket (preferably one with dick-sized holes) and then proceeding to fornicate with them through the blanket. waaaahoooo.
BillyBang: Yo, girl! Let's blanket fuck!

by ryan fearon February 29, 2008
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A term explaining when everyone in a group gets reamed in the ass
Everyone on our shift had to stay 5 hours extra. We were completely blanketfucked.
by Timmah February 24, 2004
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