Finger slippage
to feel someone up or or engage in foreplay with the hands.
"I totally got my finger slippage on with that girl last night in the club"
Jon: "How'd that date go last night?"
Jeff: "Pretty good, we didn't bang, but I got some finger slippage in."
Jon: "How'd that date go last night?"
Jeff: "Pretty good, we didn't bang, but I got some finger slippage in."