1 definition by GayUnicornAaron
While having sex, the males penis will start rapidly swinging around in a circle like the blades of a helicopter. Anyone that happens to be on the penis in this time will become part of the penis helicopter and start rapidly swinging in a circle, also becoming the blades of a helicopter. This will cause both of the people having sex to fly off and never be seen or heard from again.
"Hey dude, did you hear of what happened to Rick last night? When he had sex with Tiffany, he did The Peni-Copter. I havent seen him since."
by GayUnicornAaron June 6, 2019