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Wiktionary
too much information

interj. (context informal English) An expression indicating that someone has revealed information that is too personal and made the listener or reader uncomfortable. Usually written as "TMI".

Wikipedia
Too Much Information

"Too Much Information" is the third single released from Duran Duran's 1993 album, Duran Duran, popularly known as The Wedding Album.

Too Much Information (album)

Too Much Information is the fifth studio album by English indie rock band Maxïmo Park. It was released in the United Kingdom on 2 February 2014 by V2 Records and Daylighting Records. PIAS Recordings in the U.S and Europe. Hostess Entertainment in Japan and Universal Records in Germany

Usage examples of "too much information".

And if that's not entirely too much information already, go to www.

Anyone traveling through time with too much information from another time blows up.

Or did Ander think she might share too much information with the Syprians?

She felt like her mother, worried that Franke had too much information.

Complex server type programs (Like Exchange) provide their own RPC services in addition to the ones NT provides as an operating system --(TCP Port 135 is used as a port-mapper port, we also know that if too much information is fed through port 135, you can crash an NT box.

Their enthusiasm was infectious, prompting Domenica Corsi to express her customary concern about providing too much information to these all-but-unknown aliens.

There was just too much information to cover in the galaxy - the set of books, unwieldy as it might be, would simply become unmanageable if anything like completeness of expression and description were attempted.