1 definition by Spekkio

A reference to a Mattel doll developed by the Handlers (also the inventors of the "Barbie" line of dolls) and sold from 1959 through 1965. "Chatty Cathy" had a pull-string on her back; she randomly "said" one of eleven phrases when it was pulled.

In modern slang, a "Chatty Cathy" is an epithet used to describe a person who is talking incessantly (and annoying the people around them).
"The bus driver is a real Chatty Cathy. I'm trying to listen to a podcast, but he just keeps blabbing to another passenger."
by Spekkio July 31, 2022
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