Top Definition
To suddenly disappear or not be at the appointed place at the appointed time.
Tony: "Hey, I'm ready to make this call guys."
Sean: "Who you making it with?"
Tony: "One of the engineers.....Hey, where the fuck did they go?" "I got six guys on the line here and he was just here 2 seconds ago."
Mark: "Looks like he did a Mallory on you."
by Frainslug March 20, 2007
5 Words related to a Mallory

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