adj. Full of non-boring, non-lame, non-yawn-or-suicide-inducing joy.
Real citation: “I'll second wolfie's very diplomatic response to your characterization of Tina as "blah." Ms. Blah gets the two hottest chicks on the show, IMHO, and that has to say something about her that is decidedly un-blah... ;)”
(obLW, “The L Word,” Jan. 20, 2005, Television Without Pity,
Made-up citation: "My mood is un-blah, but don't be afraid to pass the Prozac, 'cause I'm totally un-woohoo too."