Scottish actor James McAvoy dreaded filming his steamy sex scene with Keira Knightley in new movie ATONEMENT - because he feared she would ridicule him over the size of his manhood. The Last King Of Scotland star is the envy of men everywhere after sharing a passionate love scene with English beauty Knightley in the big-screen adaptation of Ian MCEwan's novel, but he admits he wasn't looking forward to the shoot. He says, "I had that horrible moment when I thought, 'Oh, for f**k sakes, I don't want to do this. I don't want to feel like this, we've not even talked much and she's going to think I've got a small penis."