To describe sex when talking to someone.
So Dan and I went out last night, we went back to his place, and then blah, blah, blah.
by NomadScarlett April 17, 2011
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BLAH BLAH BLAH BLAH BLAHBLAH BLAH BLAH BLAH BLAHBLAH BLAH BLAH BLAH BLAHBLAH BLAH BLAH BLAH BLAHBLAH BLAH BLAH BLAH BLAHBLAH BLAH BLAH BLAH BLAHBLAH BLAH BLAH BLAH BLAHBLAH BLAH BLAH BLAH BLAHBLAH BLAH BLAH BLAH BLAHBLAH BLAH BLAH BLAH BLAHBLAH BLAH BLAH BLAH BLAHBLAH BLAH BLAH BLAH BLAHBLAH BLAH BLAH BLAH BLAHBLAH BLAH BLAH BLAH BLAHBLAH BLAH BLAH BLAH BLAHBLAH BLAH BLAH BLAH BLAHBLAH BLAH BLAH BLAH BLAHBLAH BLAH BLAH BLAH BLAHBLAH BLAH BLAH BLAH BLAHBLAH BLAH BLAH BLAH BLAHBLAH BLAH BLAH BLAH BLAHBLAH BLAH BLAH BLAH BLAHBLAH BLAH BLAH BLAH BLAHBLAH BLAH BLAH BLAH BLAHBLAH BLAH BLAH BLAH BLAHBLAH BLAH BLAH BLAH BLAHBLAH BLAH BLAH BLAH BLAHBLAH BLAH BLAH BLAH BLAHBLAH BLAH BLAH BLAH BLAH
by OwO BOI August 17, 2019
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1. What you say when someone is going on, and on, and on about their boring ass life and you want to show how obnoxiously hilarious you are.

2. Also a Finding Nemo reference.
Kieran: oh! So I forgot to tell y’all that I’m gonna be a father!

Emma: blah blah blah me me blah blah blah blah blah me me me

Simon: that was harsh, Emma.

Andy. But needed. Let’s go watch Finding Nemo
by Pogoextreme July 07, 2018
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That which follows logically, typically in the vernacular of routed IP traffic. Arose from the writings of technical manual authors when referring to traffic passing through a router past a certain control point. May be capitalized or lower case.
After making the new cache settings, port 80 will read "xxxx" "BLAH, BLAH, BLAH, BLAH..,"
by Dougie D July 22, 2006
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An example of someone chatting bare shit BLAH BLAH BLAH, someone who would probably be a good salesmen, doesn’t stop talking. A figure of speech to mock someone.
BLAH BLAH BLAH, have you finished
by Urbantheturban July 08, 2019
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Nonsense words used in English to show speech without the contents having any importance
by Fangsta December 14, 2003
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Blah blah blah is the language my last girlfriend spoke after our first year of dating.
Honey, blah blah blah?
by eugenelightning August 05, 2006
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