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a question regarding the condition that is expected to follow a generous favor; "catch" could also be used individually as a term for a condition
Scott: Hey man, my boss got us two free tickets to see the Lakers game.
Joe: What's the catch?

Scott: My girlfriend said that you can come to the party, but you can't bring any liquor
Joe: Damn! I knew there'd be a catch!
by RandomStephanie June 07, 2007
What can I get from that?
tell me what's the catch on your product.
by rcee cabungcal August 27, 2007