1. To immediately leave a hostile area when either compromised or under fire. (Used extensively by US Special Ops)
2. To leave an undesireable area very quickly
- "The Black Hawk dusted us in and before we knew it, the place was crawlin' with bad guys. My team leader immediately called them back to un-ass us."
- "The party sucked. We un-assed."
December 19, 2005