You know, I honestly don't think that even occurs to him; he just doesn't like baggy trunks. He'd probably be mortified if anyone mentioned it, though.
Lest you think I'm a sick puppy, what I actually meant is that he is tall, slim and broad-shouldered -- he's got that swimmer's build that makes jammers look good, rather than dorky. (Lucky for him he seems to take after his Dad's side of the family, rather than short, dumpy me.)