Person #1: Knock Knock
Person #2: Who's there?
Person #1: Interrupting Coefficient of Friction
Person #2: Interrupting Coefficient of Fric-
Person #1 (Interrupting): Mü!
Person #2: Who's there?
Person #1: Interrupting Coefficient of Friction
Person #2: Interrupting Coefficient of Fric-
Person #1 (Interrupting): Mü!
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