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1.
Phrase used to simply describe something mind-blowing or deeply philosophical in nature. Often said when too lazy to reply in an equally sophisticated or intellectual manner.
Girl: "Have you ever thought that perhaps the Universe created intellectual beings so it is able to understand itself?"

Guy: "I can't say that I have."

Girl: "It's quite mind-bending."

Guy: "Shit's deep."
by TheUrbanProfessor November 18, 2011