A flat-chested girl who intentionally makes her boobs look big on social media and/or dating sites. When they are finally seen naked in person, it is learned you've been completely duped by her lie.
Person 1: "Dude, how was your date with Melissa and her huge tits?"
Person 2: "Bro, they aren't huge; she wears padded bras. She's an A-Cup...she's just another C-Cup Catfish."
Person 2: "Bro, they aren't huge; she wears padded bras. She's an A-Cup...she's just another C-Cup Catfish."
by Screw Liberals June 13, 2016
(Noun) A girl whose public appearance or dating website pics intentionally give the impression she has a great rack, but when seen in person without a bra she is dissapointingly flat-chested.
"So I slept with Lisa on our 3rd date. Unfortunately, she's a C-Cup Catfish. Her boobs were even smaller than the zits on my brother's face."
by Screw Liberals April 6, 2016