adj, n a good, often campy, if somewhat booze and drugs-addled time to be had.
Often used in hindsight when describing a crazy event in which no one can quite recall what happened (hence, 'blur').
syn. a hot mess. Note that unlike Hot Mess, this term more regularly applies to events and not people (though it's not unheard of when it's describing people of Amy Winehouse proportions).
1 Wow, that whole weekend was basically a big jazzy blur. How many naked table dances did we do?
2 I knew when I found myself in the subway stinking of margaritas, wearing Brian's underwear and Tenesha's lipstick the next morning, that the previous night was just a huge jazzy blur.