It's a noun that describes the state of existence where one's b’s, m’s, n’s, and d’s, among other letters, phonetically sound either the same or flip plopped in pairs because of a heavily congested nose.
Grandma: Cad you get be sub soup dear? I cad’t mreathe nrhough by dose ad all, I caught a cold add I cad’t boove.

Katherine: Hold on, did you say “can you get me some soup dear, I can’t breathe through my nose at all, I caught a cold and I can’t move?”.

Grandma: Brecisedly!

Katherine: Haha! Oh boy!…sounds like you got a bad case of the Mob Barley grandma! I’ll go get you your soup in a jiffy!
by platonymous May 23, 2014
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