This was overheard at the Hillstone Restaurant, Winter Park FL. A very drunk lady was talking to her friend. It is a mashup of “drink someone under the table” (to drink more alcohol than someone else) and “throw (someone) under the bus” (to exploit someone’s trust for one’s own purpose). My guess is that the speaker was thinking of a bus boy, someone who cleans tables at a restaurant. This is the connection between bus and table. Also, “under” is in both expressions, no doubt contributing to the mental mix up. A big thanks to Tom Justice for hearing this one and sending it in!
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