peter also said on inside the actors studio that when it came time to film the bus scene in mikey and nicky, elaine may had told him to pick one thing about john and to concentrate on that the entire time, and the thing that he chose was the side of his face. you can see him looking here:
“and you know, john has high cheekbones, and when he laughs, there’s a devil kind of laugh there. and i had a thought that he looked like a skeleton, like a devil skeleton. and the next fresh thought that i had during that take was that we weren’t in a bus, we were in a hearse.”