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1.
To masturbate by placing one's penis between a woman's breasts.
Definition of clinical insanity: when you would prefer to be submitting entries to the Urban Dictionary rather than having a French fuck with Britney.
by Dunky Oggins January 02, 2004
 
2.
Stimulation of the male organ by sliding your rod in between a nice huge set of tits until climax
I gave Maria a nice French Fuck in between her huge gazongas. The result was banana juice all over her yapper.
by Pepper November 08, 2004
 
3.
Standard cock-in-cunt fucking but with one or both partners simultaneously sticking a finger or thumb up the other one's ass.
I thought our sex was already good, but when we French Fucked, it was better.
by sexy aunt sally April 29, 2012