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When a person says something serious, but hides it using sarcasm.
Girl1: "I tots just saw the way you were looking at your ex! You def still have feelings for him!"

Girl2: "Oh yeah. You're right. I'm still madly in love with him."

Girl1: "I knew it!"

Girl2: "You're so f-ing dumb. That was sarcasm."

Girl1: "No, that was realcasm."
by GGnumero3 July 26, 2009
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