When you take words that sound the same and put them together to make a completely different sentence. Can also be used when someone miss-hears you and questions what you said with what they thought they heard.

First example and definition derived from the All bran advertisements.
Guy1: "Yum, this all bran is delicious"
Guy2: "What?! Tall Jan is malicious!"

Guy1: "I've composed a riddle"
Guy2: "You've exposed your diddle?!"
by Davidism April 12, 2009
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