Alternative name for sexually transmitted infections.
When you had sex with a girl and you came away with more than you bargained for, you got sex with french benefits.

"Man, I heard you did it with that HOT chick"
"Dude, not cool, she gave me french benefits!"
"Lacie is really good in the sack, but watch out, she will give you french benefits"
by Toomanytocount April 10, 2009
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