a Mallory 

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."

a Mallory by Frainslug March 23, 2007

pop a mallory 

Throw up so hard you tear your esophagus.

"Man I drank so much last night I thought i was going to pop a mallory as I prayed to the porcelain gods!"

pop a mallory by Peez February 8, 2007

Pulling a Mallory 

Being in a cunty mood. Dismissive. Irritable in a passive-aggressive way.

Jeez, Clarissa is of a mood today, isn't she?
Yeah, she's pulling a Mallory.

Pulling a Mallory by George the Cub March 28, 2020