whale tail
n.— «Another distraction occurs when pants ride low in the back and expose thong underwear, a phenomenon students have dubbed “whales’ tails.” “If you a 16-year-old boy in an English class, and you’ve got three whales’ tails in front of you, it’s pretty hard to concentrate on verbs,”» —“Updated Dress Code Addresses New Styles” by Tom Quinn Oregonian (Portland) June 24, 2004. (source: Double-Tongued Dictionary)
Further reading
A Winter Dictionary (Bookshop|Amazon) by Paul Anthony Jones includes some words to lift your spirits. The verb whicken involves the lengthening of days in springtime, a variant of quicken, meaning “come to life.” Another word, breard, is...
Samantha Harvey’s novel Orbital is a sensuous, exhilarating meditation about the strangeness of life on a space station, with its mix of tedious tasks and jaw-dropping views. And: a musician who rode the rails in his youth shares the slang he...