A very ignorant and floozer way of calling a chick a regular bitch...but you got to say it all deep and trashy when you call it out...just to get to the core meaning...
"Bret's a rockstar and if you want to date a rockstar you better get used to falling of the stage biiiitch!"
is to tell someone or something that they are a bitch when you really mean that they are a biiiitch (higher pitch on the I's and also you say it not as if it were a actual bitch)
your dog is a pure breed bitch, biiitch!!! (so in other words you are saying the biiitch to the person who is listening) biiiiiitch