As tempting as it seems to wear tennis shoes with your tux, don't do it. I think it looks ridiculous. If you're 14 years old, maybe give it a shot. In general, don't portray anything that says 'I'm too cool and I don't care.'
“People who decide they came to earth to work, who make work their personal philosophy, are kept very busy.”
“If I had known it I would have told my son, I'd rather shoot you than let you join the SS. But I didn't know.”