While slips can hide VPL and your backside on a windy day, Spanx can help hide a lot more, like cellulite or a protruding tummy.
cellulite cel·lu·lite (sěl'yə-līt')
A fatty deposit causing a dimpled or uneven appearance, as around the thighs.
A popular term for fat that is difficult to remove by dieting and that often has a dimpled appearance. There is no physiological difference between cellulite and ordinary fat.