The part of a man's hanging ball sack that shows when you moon someone.
Is referred to as a person/pet.

the whale tail is the shape formed when a g-string rides up high over a womans trousers

A small, ninety-five pound, genital-less, man-like creature that with his scrawny body annoys the fuck out of humans when they try to sleep. His antics last a few hours in the night, and consist of stealing your pillows and blankets. Also, if you fight back he goes for the eyes.

aids, hiv infection. transmission of std