Drain the Vein

To release a large amount of urine on somebody's face.

Be right back bro, I need to drain the vein.

by The_Last_Black_Man October 3, 2010

drain a vein

When you go to "take a leak."

Man...I drank so much beer that if I don't drain a vein now I'll explode.

by earlofduke February 4, 2010

two can drain that vein

Just as two can play at that game, two can drain the vein of one's backed up semen.

Buffy: "Did you hear Lance challenged that more than one Ho is needed to make him climax?"
Candy: "Oh really? Two can drain that vein!"
Buffy: "Game on!"

by GlazeHer April 26, 2014

Drain the main vein

Slang for "Urinate"

"The Main vein" being the penis of course.

"I gotta drain the main vein something fierce"

by Doc Evil July 24, 2003

drain my main vein

to piss (=

i'll be right back guys i gott go drain my main vein

by dongsaucer (= September 17, 2008