Gabourey Sidibe: Chris Rock Grabbed My Butt!

'Precious' Oscar nominee Gabourey Sidibe was honored at the third annual Essence Black Women in Hollywood luncheon in Beverly Hills on Thursday -- and she tells ET's Kevin Frazier that Chris Rock couldn't keep his hands off of her!

"As I go up to get my award in a room where my dad is, because he's one of my dates, Chris Rock grabbed my butt with both of his hands -- and then I slapped him back," reports Gaby with a smile. "I didn't think too much of it at all -- but my dad was super pissed."

"Some dudes gotta have it -- it's my own fault for being too damn fine," she jokes.