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1.
A sarcastic statement used to mock someone's bad idea, pretty much saying it's not gonna work out like that.
Kid 1: "Oh man, my friend and I are gonna go get loaded it in the park!"

Kid 2: "Oh, well, I mean, the police station is right next door... But yeah, no, that's totally gonna happen."
by Peter W.N. June 27, 2009

Words related to that's totally gonna happen

that's happening for real false for real fuck yeah totally whatevs yeah no yes yes please