Used to describe something that is even cooler than just plain bitchin'. Taking "bitchin'" a step further, if you will.
Some Kid: "Wow, you've got quite a bizitchin' CD collection, Megsi."
Me: "Yeah... I kinda have to, being the Secretary of Being Totally Awesome and all..."
a comment spontaneously uttered when entering an establishment where there is a fine looking young woman. A bastardization of bitch, beeyatch, etc.
pl. bizitches
the hotter the chicks at a given establishment the longer the word is stretched out