I'm not comfortable being around too many people. I don't like being out in public too much. I don't like going to bars. I don't like doing celebrity stuff. So most of the characters I play are people who don't always feel comfortable beyond their small circle of friends.
The Canteen Boy, the reason you feel bad for him and you can laugh is because he, and I guess a lot of my characters, they don't notice they're getting made fun of. So they'll say something back that's not that great a quip, but in their mind they won the argument.