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.

Finger Clapping by SlvrBulet January 5, 2022

finger capping 

Shooting idiots with your finger guns

"Finger capped that asshole as he walked away"
"I've been finger capping all day, so many idiots out and about"

finger capping by nobumpunching July 29, 2012

fingerlapping

When you shake someone's hand and their fingers overlap inside of your grip like a handful of limp noodles.

I knew that guy was a dullard when I shook his hand and experienced some major fingerlapping.

fingerlapping by thomasrthelen March 7, 2011