Yeah, John wasn't really mean to autograph seekers or anything. As we know. But he seems like if you got into a deep conversation or something, he would intimidate you.
He did have a sence of humour about it, In one of the books I've got he was going to a recording studio and a girl asked 'When are you getting back together with The Beatles?' and John's quick answer was 'When are you going back to school?' I don't think I'd be scared of any of them. I'd just be tounge tied