A cylindrical shaped container housing the slick substance known as lube. Often used by gay men before they butt-fuck each other. Sometimes flavored to elevate the pleasure of the anal participants.
*Denver tries to insert himself inside Ben's puckered asshole*
Ben: What THE FUCK Denver, at least use some lube.
Denver: I don't have any Benny.
Ben: Just grab the Tube o' Lube from the nightstand!
When partially withdrawing as far as your helmet from doggy position the Labium minus is inverted to form a sheath resembling a rubber steering boot, a toilet plunger or a section of tube sock.
It appears only an asian or latino is tight enough to give me a tube sock....