whale tail
n.— «Whale Tail: The top rear strap of a woman’s thong, which closely resembles a whale’s tail rising from the water whenever the wearer bends over or squats.» —“Re: OT—For jb’s eyes only” by Cliff Huprich Usenet: alt.machines.cnc Jan. 26, 2004. (source: Double-Tongued Dictionary)
Further reading
Cat hair may be something you brush off, but cat hair is also a slang term that means “money.” In the same way, cat beer isn’t alcoholic — some people use cat beer as a joking term for “milk.” And imagine walking on a...
You know when a cat’s tail goes straight up and appears to vibrate? Emily from Coventry, Rhode Island, says her family has their own word for that: fribbling. She says her family also made up the word bomple to denote the action of fruit...