Doing a Billy

Definition

To completely bail on pre-made plans without showing up or giving proper notice, leaving everyone else stranded and annoyed—basically the ultimate flaky move.

Example Usage

We had the whole night planned, but he totally did a Billy and never showed up.

Source: Urban Dictionary (https://www.urbandictionary.com/define.php?term=Doing%20a%20Billy&defid=18385111)

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