throw someone under the bus
v. phr.— «We have benefited from having him here and I don’t feel any need to throw him under the bus.…He’s 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.» —“Director Of Bureau Under Fire” by James Lawless Plain Dealer (Cleveland, Ohio) Feb. 20, 1995. (source: Double-Tongued Dictionary)
Further reading
David from Matthews, North Carolina, grew up using the term cheese toastie for a type of grilled cheese sandwich. Cheese toasties are familiar in Ohio, Indiana, and Illinois, particularly around the cities of Decatur and Springfield. In the UK...
Matt from Grand Rapids, Michigan, was puzzled when colleagues kept saying someone had stood up at a wedding, indicating that they’d been a member of the wedding party. The expression stood up in that sense is an Americanism going back about two...