The Godfather legend briefly lived at Hugh Hefner's lavish property in Los Angeles during the 1980s and admits he would enlist a young Scott to draw in a bevvy of beauties whenever his son came to visit.
And James Caan reveals the sly trick worked like a charm every time.
He tells People magazine, "I'd have Scott bring me girls. No one could say no to a cute little boy!"
James split from Scott's mother, model Sheila Ryan, when he was a baby.