Cardi B breaks down the biomechanics of why her butt moves the way it does, explaining the skin elasticity issues that prevent certain surgical procedures. Cardi B broke down the science behind her body’s natural movement during a recent livestream, explaining the biomechanics of her signature backside jiggle. “I can’t just go and lipo my butt because my skin is like kind of loose. “So if I just go and get a lipo reduction that is the easy way, my ass could drop.” She’s saying her specific anatomy makes certain procedures risky, and she’s made peace with that reality.