Tube buddy 

A friend you would be willing to perform a double team with in a porno.

Craig: I would be a tube buddy with Jason if it was with Jenna Jameson.

Tube buddy by frydaddy34 February 26, 2010

Biddy Tube 

A skintight "dress", usually strapless, the sits just above the nipple and goes just below the crotch.

Biddy 1: It's 10 degrees out, we're going to a dubstep concert and I want to constantly adjust my dress so my vagina doesn't fall out. What should I wear?
Biddy 2: You're brand new American Apparel shiny hot pink biddy tube!

Biddy Tube by The Kinkster November 10, 2011