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!

Judy: COOCOONANNY!!!!
by ryan fearon March 1, 2008
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Blanket fucking is were you find a hole in your blanket and stick your dick on it
Adam watched his friend blanket fucking for 2 hours.
by Micnuggets November 28, 2015
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A blanket or cloth, used to wipe off the sweat and bodily fluids off of 2 or more people after sex.
Hey Brad! Dont use that towel to dry your hair man! That is mine and your sisters fuck blanket!

When me and Brad tag-teamed your mom, we greased her up so bad she needed a fuck blanket afterwards.
by LiquidHat March 27, 2010
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Someone you settle for so that you are warm and sexually satisfied throughout the winter months.
I need someone I don't have to worry about to be my fuck blanket this January.
by Lemon Pippin November 30, 2011
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