Douglas Brinkley, professor of history, Rice University, was being interviewed on CNN. He was asked what he thought Trump was doing to the Republican Party. Brinkley responded by saying Trump was dividing the Republican Party and “ he’s thrown Mitch McConnell out of the bus”. This is a mashup of “throw (someone) under the bus” (avoid blame by allowing someone else to take responsibility) and “go out (of) the window” (discard or toss a plan or way of thinking). “Under” and “out of” are the culprits here. The phrase “throw (someone) under the bus” has been mashed up a lot. See, for example, other variants on the website such as “he can drink anybody under the bus” – https://malaphors.com/2018/08/29/he-can-drink-anybody-under-the-bus/ and “Trump is not going to throw Paul Ryan over the bus” https://malaphors.com/2017/04/05/trump-is-not-going-to-throw-paul-ryan-over-the-bus/. By the way, he did. A big thanks to Brenda Hubbard for hearing this one!