Cockney rhyming slang for internet shorthand 'tl;dr' meaning 'too long; didn't read'.
Used to tell someone to just summarize what they're saying, because you can't be arsed to to go through it all. Also used to denote such a summary.
Most notably, 'blue fawn' provides a means to convey 'tl;dr' in face-to-face conversation for comedic or ironic value.
As is common in Cockney rhyming slang, the slang term is not necessarily related to, or rhyming with, the original word, as it may represent multiple iterations of rhyme, synonym, or ironic interpretation.
In this case, 'blue fawn' is a synonym for 'teal deer' a possible pronunciation of 'tl;dr'
Used to tell someone to just summarize what they're saying, because you can't be arsed to to go through it all. Also used to denote such a summary.
Most notably, 'blue fawn' provides a means to convey 'tl;dr' in face-to-face conversation for comedic or ironic value.
As is common in Cockney rhyming slang, the slang term is not necessarily related to, or rhyming with, the original word, as it may represent multiple iterations of rhyme, synonym, or ironic interpretation.
In this case, 'blue fawn' is a synonym for 'teal deer' a possible pronunciation of 'tl;dr'
A: <unnecessarily long, overly verbose, meandering explanation of something with no point or end in sight>
B: Fucking 'ell man. Just give me the blue fawn of the matter will ya or we'll be 'ere all night!
B: Fucking 'ell man. Just give me the blue fawn of the matter will ya or we'll be 'ere all night!
by Baka-chan June 26, 2009
Get the blue fawnmug. by CNic March 4, 2009
Get the Cobalt Bluemug. Blue tits is a condition often described by sexually frustrated women or girl as a painful tingling in the tits and clitoris accompanied by a slight blue tinge of the cheeks. It's caused, or at least claimed to be caused by a need for orgasm.
“Matthew showed me his sweet cock, and then took off on me. Now I have a case of the old blue tits.”
by Hisforhat February 5, 2019
Get the Blue titsmug. by EPS February 24, 2005
Get the blue diamondsmug. The crazy old Texan Vietnam vet we gave an MRI to today asked if we could put in a porn for him to watch during the scan. To which I responded "no sir we need minimal movement from you for optimal results". He said "Don't worry son, I haven't had my blue thunder today yet."
by fjordy December 28, 2005
Get the blue thundermug. 
Artificial sweetener. So called because the most common brands, Sweet-n-Low and Equal, are available in pink and blue packets respectively.
by uwg August 10, 2007
Get the pink and bluemug.