throw someone under the bus
v. phr.β Β«We have benefited from having him here and I donβt feel any need to throw him under the bus.…Heβs gotten pretty good results. He could use some help from his members, who could pay more. He has had some rough times, but you have to look forward.Β» ββDirector Of Bureau Under Fire” by James Lawless Plain Dealer (Cleveland, Ohio) Feb. 20, 1995. (source: Double-Tongued Dictionary)