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)