Pull a Manda

To piss oneself in public -- usually, but not always, as a result of too much drinking at one's defence party.

Person 1: "Hey, did you see Jane pull a Manda last night?"
Person 2: "Seriously?! She pissed herself at her defence party?!"
Person 1: "Yeah! I guess incontinence really is a symptom of too much grad school."
Person 2: "That and being a total derp."
Person 1: "Oh yeah, Jane is a total derposaurus, just like Manderp."
Person 2: "lololol, Manda is a total derpinatrix."