Vibrator (device designed to stimulate a woman's genitals).
Back-of-the-book; denoting those stamps in a catalogue that are not used for the payment of regular postage fees, and are displayed separately in the catalogue after that listing; the division between these two groups varies with the publisher.
A frothy mixture of lubricant and fecal matter as an occasional byproduct of anal sex.
Shit: rubbish, worthless matter, nonsense, bull.