Definition
When someone commits to 80% confidence about showing up to an event then mysteriously vanishes on the actual day—leaving you with a vacant seat and buyer's remorse.
Example Usage
Kris pulled the Butty Effect again; he swore he'd be there but ghosted without even texting an excuse.
Source: Urban Dictionary (https://www.urbandictionary.com/define.php?term=The%20Butty%20Effect&defid=10173378)
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See “The Butty Effect” in Corporate Speak, Gen-Z Slang, Pirate Speak, and more.
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