kerploinking 

when a man has a full erection, he lays on the ground and the woman jumps off of the bed onto his penis, aiming to get it in the first hole flawlessly

"Hey babe, do you wanna try kerploinking tonight? I can even pull out the stepping stool for some added height"

kerploinking by 4le_xxd July 27, 2025

Kerplunking 

Where one or more people hang from a miscellaneous object.

Lucy and Adam were sick of planking, so instead decided to try out kerplunking.
They kerplunked from a tree branch.

Kerplunking by whitechocolateladybird July 20, 2011