The actress, 45, said she was around eight when she had gone to the cinema with her mother and father to watch the 1976 film "Silver Streak".
"He'd hurt himself and said 'where does it hurt', and he said 'here'. She started to kiss him and I could feel, I thought 'where is this going?," she said.
Adding that she was watching the scene with her mother, she continued, "She started to unbutton his shirt and I could feel my mother's buttocks clenching. 'I thought 'oh I want some of that'."