Murtain

The uncool, cool kind of threesome in which a male inserts a double donger in his ass, and has sex with two women with both the forward and backward motion of his hips.

Oh man I totally murtained your mom and sister last night.

by Twomack July 29, 2009

murtains

A shortened version of "meat curtains"

Damn, Debbie needs bigger undiez, her murtains are hanging out.

by JAHY45 August 24, 2007