1. To be hastily and forcefully removed from a place. Likened to the ejection of a vagrant (a "bum") from a place. We got the bum's rush out of the bar after Joe started drunkenly insulting the bartender.

2. To be peremptorily or abruptly dismissed, due to a failed or rejected plan, idea, or performance. I brought up the possibility of reducing managerial pay to other employees, but that idea quickly got the bum's rush.