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An expression of indifferent surprise. Made popular by Will Ferrell's character in Talladega Nights using the phrase to describe "shake n' bake" to a rival.
"Hey look, I just got an A on my World History test."
"That just happened."
by CTangent May 10, 2008
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(Phrase) The only thing you can say when something so audacious happens that you have no response beyond iterating that the event occurred in the first place.
Person 1: I just got a tattoo of Justin Bieber on my ass

Person 2: I... Uhhhh... That just happened.
by PJ the Coug September 21, 2016
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