A phrase used to interrupt people's conversations, in reference to the end of Portal 2.
Bob: Do you know what I thi-
Jim: We're in space.
Bob: -nk of that new game? I think it's awes-
Jim: We're in space.
Bob: -ome.
Jim: SPAAAAACE!
Bob: ¬_¬
by Mr. lololface June 2, 2011
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