The sexual act of insterting a finger or penis into a person’s foreskin. Synonymous with docking. The French Finger Trap may also refer to the act of inserting one MAS-36 rifle into another by way of the bayonet lug. The rifles will then become semi-permanently attached tip-to-tip.
Jacque showed me how to perform a French Finger Trap last night. It was fun at first, but we were stuck together until morning.
When you go in for a kiss and there is suddenly someone else's tongue I'm your mouth.
Friend: "Christine, how was your date with Tommy?"
Christine: "Everything was great until he caught me in a French trap at the end..."