throw under the bus
v. phr.— «Dees said he talked to Hood after he bonded out of the El Paso County Criminal Justice Center on Sept. 26, 1990, and warned him “that he was being thrown under the bus by Jennifer Reali.” But he said Hood believed Reali “was going to tell the truth.”» —“Hood talks without thinking, friends testify at murder trial” by Erin Emery in Fort Morgan Gazette Telegraph (Colorado Springs, Colorado) Dec. 12, 1991. (source: Double-Tongued Dictionary)