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When you are trying to explain one of your deep thoughts to your friend and your friend switches subjects to talk about a completely random and pointless topic.
Joe: "Have you ever wondered if your future is set in stone, or if you actually have control of your destiny?"

Steven: "Hey look, Nyan Cat!"

Joe: "Looks like my deep philosophical musings have been Thought Blocked once again."
by Miller Bro January 19, 2013
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