When a user knows about a birthday surprise in advance but has to pretend otherwise to preserve the sanctity of the surprise.
Coined by tumblr users mudkip and unclefather.
Coined by tumblr users mudkip and unclefather.
Person 1: dude no don't get that I already bought you one for your birth-– f**k
Person 2: don't worry, mudkip's law. I didn't hear anything.
Person 2: don't worry, mudkip's law. I didn't hear anything.
by sapphicat February 20, 2021
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