What does Ass Ambush mean?

Ass Ambush meaning in Urban Dictionary

1. What the results are whenever diarrhoea sudden goes volatile, unexpectedly, could be dangerous. More often than not painful.2. Similar to a jump, but happens when your buddy or a complete asshole arises from no place and stabs your ass, virtually, with a sharp object/lethal gun. Unpleasant and a dick head move.3. A sly sexual move.