1. good, fuckin great, awsome
2. whinging, complaining

Not just great, but bad-ass fine.

1) similar to "awesome" or "bad ass"
2) when someone complains, mainly female

to be very fucking cool

(adj., exp., n.) 1. Spectacularly good. 2. Awesome, great. 3. Used to denote awesomeness, greatness or spectacular goodness. 4. Used to describe the act of complaining.

Origins date back to at least the very early 60's. Great, the best, hot, excellent, awesome, unbelievably good. In the 60's and 70's was often combined with the word "ass", as in "bitchin-ass", to describe the ultimate, supreme, primo, or a great looking sexy girl.