cock astronaut 

Someone whos penis is so big, when it gets an erection, it seems to go into space, like an astronaut.

Once I took off his pants, I knew i had met a cock astronaut.

cock astronaut by His Airness Dos June 12, 2006

astronaut cock 

One who cannot control when his penis becomes erect and resembles a rocket taking off into space.

Taco Terry met us at the strip club and walked around the club with a boner all night long, what an astronaut cock.

astronaut cock by Peachez-757-23336 November 29, 2017

COCKSTRONAUT

One who sucks cock so hard that the cum explosion launches them into space. A cockstronaut may be male/female

She sucked my cock so hard I turned her into a cockstronaut.

COCKSTRONAUT by bosvark May 13, 2011