Any woman (or man) who wont shut up. Sometimes it's interesting, sometimes it's not. Mostly not.
Lady: And then I woke up and put the blah blah .....
Me: *omg such a chatty cathy*
by seaswimmer August 16, 2016
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Used as a Utah slang word for the typical LDS group daters that ruin where ever they go by bringing a horde of "Chatty Cathy's" along. Hence, Girls that can't seem to shut the F*** up and talk over meaningless shit non-stop.

Also being transposed into the gay scene of Utah as drama queen gays who can not help but not create rumors, embellish, or reveal any personable items with no remorse.
Damn, can you hear all those chatty cathy 's that just walked into the movie theater? I better get my stun gun to shut those bitches up.
by Amos Vanburren November 03, 2007
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"after we dropped acid last night i was a real chatty cathie"
by cathie August 25, 2003
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A person who is always sending and receieving snapchats.
Alison is always on her phone sending snapchats.. She's a little snap-chatty Cathy.
by D-rek831 August 17, 2013
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