Top Definition
A game that gets loudmouths to shut up. Usually used as a meditative exercise for the sane individual before sleep. Also known as a competitive children's game where the child who stays silent the longest receives a non-existent prize.
Lara: You know this guy who was hitting on me, blah blah bl-
Jane: I have a great idea, let's play Silent Castle One, two, three, go!

by Carly Wild December 22, 2008
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