Corey's shocking allegations also include claims his mother force-fed him diet pills and withheld food from him - hiding his favorite treats on unreachable high shelves - so he wouldn't gain weight and lose out on potential movie work. He writes: ''I do have round, chubby, cherubic cheeks, but I always thought that I would grow into them. Now she tells me that if I'm not careful, I'll grow up to be a fat, disgusting pig. She lifts my shirt and pinches a fold of skin between her fingers.'' Despite the torment behind closed doors, Corey explains that Sheila - whom he describes as ''erratic,', ''depressive'' and a substance abuser - ''knew how to turn on the charm'' in public. He added: ''She might have spent the entire morning in bed, calling me 'fatso' and 'piggy' and driving me around the house, but then we'd drive to an audition and she would immediately switch gears.''