He said: "She's like a fairy princess. There's a brand of red-velvet cake, her mouth is made of that. She smashes you in the mouth in those kissing scenes. If I was Ben Affleck, man, I'd be p****d off."
Of the upcoming star, he said: "She's delightful and beautiful and funny and smart and the kind of woman you'd give up a billion dollars for."
He also has a tryst with an older woman, played by Dame Helen Mirren - and reformed womaniser Russell loved the fact the actress shares his saucy sense of humour.
Of their bed-based scene - which did not feature any kissing - the funnyman told website NextMovie.com: "I was in bed with her and she was reading me one of those bedtime stories.
"And she did a dirty version of it. She was like, 'Toad took Frog and mounted him from behind and amounted him smoothly with a rhythmic pace.' "
Russell and Helen previously worked together on an adaptation of William Shakespeare's 'The Tempest' and the 65-year-old British actress recently revealed her co-star gave her an unusual gift when they finished filming.
She said: "I am the proud owner of a pair of Russell's yellow underpants. Slightly soiled I might add. But he is an inventive and imaginative and immensely energetic person, but he's not wild and anarchic and out of control, not at all."