The whole "skinny jeans have no crotch space" is a bit of a myth. Most people who say it have never worn a pair and they think it makes them seem masculine, implying that they have a large package. Unless you're pulling you jeans up to you belly button, I don't see how they're extremely restricting otherwise.

But I must say, I do think when guys wear Ugg boots it's a bit dubious imo.