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I think thoughts in my head bounce around in my skull and, if they keep bouncing around in my skull, they get worse and worse. When they come out of my mouth, they make people happy.

"Dan Harmon Talks RICK AND MORTY, Working for Adult Swim, Animation vs Live-Action, COMMUNITY, and Much More". Interview, collider.com. July 27, 2013.
I think thoughts in my head bounce around in my skull and, if they keep bouncing around in my skull, they get worse and worse. When they come out of my mouth, they make people happy.