unass
v.— «“I’ll take ‘un-assing the A.O.’ to mean ‘helping up the arresting officer.’”…”Get a clue. The phrase is Army slang for ‘leaving the area of operations.’”» —“Re: getting rear ended” by geoffm@purplehaze.EBay.Sun.COM (Geoff Miller) Usenet: rec.autos.driving Nov. 15, 1990. (source: Double-Tongued Dictionary)
Further reading
Language is always evolving, and that’s also true for American Sign Language. A century ago, the sign for “telephone” was one fist below your mouth and the other at your ear, as if you’re holding an old-fashioned candlestick...
Brittany in Green Coast Springs, Florida, says that when she was grumpy or irritated as a child, her mother would say a phrase that sounded like Don’t be such a scooch. This bit of Italian-American slang, often rendered as skutch, denotes a “pest”...