Finger clap

The finger clap, as opposed to clapping your hands or snapping your fingers, combines both. The index finger taps the thumb repreatedly to convey a subtle but visible expression of approval, be it sarcastic or sincere.

Julie: I got a B on my physics final.
Tonya: *finger claps*

Finger-clapped

Sexual intercourse with the flanges.

"I finally snapped and finger-clapped that two I see at the bar."

Finger Clapping

The act of inserting a finger (typically the fore-finger) from one hand into the vagina, the finger from the other hand into the anus, and clapping them together against the thin layer separating the rectum from the vagina.

Similar to a finger high-five but with one-to- two people.

I applauded her fellating skills by finger clapping her after I came.