throbbing blue vein

An erect penis that is about to explode.

He broke the throbbing blue vein off in her.

by Phil Aschio July 28, 2022

To drain the main vein

Expression: for guys to take a piss.

I need to drain the main vein...like right now. Is there an industrial area where I can do it on the street?

by Sexydimma July 26, 2025