In her memoir, Sage-ing While Age-ing, 73-year-old actress Shirley MacLaine says she has led a drug-free existence with two exceptions: she says she smoked marijuana once and chowed down on cannabis-laced "bang brownies" served to her by late actor Robert Mitchum.
She also came close to doing cocaine once -- when she accidentally put a teaspoon of the white powder into her coffee cup after a dinner party.