A tube that is shoved up someone's ass. Liquids are then able to be passed through the tube into the person's anal cavity therefore giving them special sensations.
Word used to describe an asshole when specifically suggesting that the person is the tube-like, shit-covered skin within the anus, rather than the air between it.
A Kate-ism for the size serving of ice cream necessitated by a break up from any ASSTARD or fucktard. FLAVORS include "You Deserve Better" and "College Boyfriend THAT ASS" as well as "Let's Just Be Friends" and "Drakkar Noir." The ASSTUB serving is equivalent to the amount of suffering said ASSHAT has inflicted. Any way you slice it, it's gonna be big.