The smoothest thing known in human existence. Nothing rivals it's unequaled smoothness. It's main usage is to connote something supremely awesome by inferring that said awesome thing is even smoother.
"Holy balls, that guitar is smoother than liquid tits!"
"Dude . . . this pizza is smoother than liquid tits."
"Dude . . . this pizza is smoother than liquid tits."
by Smeg Thooney March 25, 2011