Ejaculescant 

Almost like another word for "Agreed!" or "Affirmative" or "Understandable", a confirmation that you agree with what someone has said.

You : "Balls"
Your friend : "Agreed"
You : "Yep"

Your Friend : "Ejaculescant"
You : "What?"

Ejaculescant by Comrade Albert August 1, 2023