Hetfield is easily the most constipated person in music. After what he did to Newsted? My gosh.
Henry Rollins comes close, but he's so full of himself he sometimes does actually gets some sort of joy out of bragging about the depths of his bowel blockage. His smile may seem contorted and about to crack his face like it was hard plastic getting jackhammered, but at least it's a smile. Does Hetfield ever smile?