Again made popular by the Dave Chapelle Show.
The Term "Im rich Biiatch" was and is used to state that you are above other people because u have money aswell as more physical things another person may or may not have.
1) "Think i aint got playstation? Im rich, Im Rich Biiatch!"
2)"I got enuff money and cigarettes to support my entire family, ha, im RICH BIATCH!"
" Dave chapelle"