The sexual act of spinning a woman above one's head like helicopter blades while she urinates.

The one spinning the woman typically opens their mouth to catch said urine.
*waft, waft, waft*
*splosh splish splash*

"Honey, what's that noise coming from upstairs?"
"Seems to me old Johnny boy is getting a wapter-copter! Proud of im' I am!"
by Tungsten Pimp January 27, 2023
Get the Wapter-Copter mug.