[leave holding the bag] or [leave holding the sack] {v. phr.}, {informal}
1. To cause (someone) not to have something needed; leave without anything,
* /In the rush for seats, Joe was left holding the bag./
2. To force (someone) to take the whole responsibility or blame for something that others should share.
* /When the ball hit the glass, the team scattered and left George holding the bag./* /After the party, the other girls on the clean-up committee went away with their dates, and left Mary holding the bag./