When someone is caught in the act of wearing something that looks hideous. Usually clothes you wear at night. It doesn’t have to be a nightie.
Howard: oh no what are you doing here?
Martin: I’m just getting some milk.
Howard: oh no, you caught me in my nightie.
Martin: I’m just getting some milk.
Howard: oh no, you caught me in my nightie.
by MeetMyMeat December 8, 2019
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