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
In White Oleander (Bookshop|Amazon), novelist Janet Fitch touts the value of memorizing poetry with these memorable lines: Always learn poems by heart. They have to become the marrow in your bones. Like fluoride in the water, they’ll make your soul...
“What has a head like a cat, feet like a cat, a tail like a cat, but isn’t a cat?” Answer: a kitten! A 1948 children’s joke book has lots of these to share with kids. Plus: an easy explanation for the difference between...