The phrase "it's a thing" is typically used to end a conversation peacefully if it is straying into potentially fractious terrain.
Jake "Coming from the Chicago political machine Obama is either dangerously nieve or complicit about the selling of his senate seat."

Mary "The fact that he didn't know and was not involved in what was going on in Chicago while ramping up as president of the United States is not an indicator of incompetence!"

Jake "It's a thing"

Bob "How long have you been playing WOW?"
Bill with some pride "Slightly over 24 hours"
Bob "That is crazy, I think you are in need of an intervention"
Bill "It's a thing."
by izzyd December 22, 2011
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