No, I wasn't looking at his crotch...there's not much there to view anyways.
I was referring to his pockets. I can see his long pockets have two bulging items in them, one of which appears to be a phone and I can't make out what the other one is next to the umbrella but appears to be rectangular in shape. That's why his right hip (our left) is stretched out - what you're calling hip pull.
Though I agree with you that he probably could have gone up one size and been more comfortable, his attempting to jam things into pockets that, by the cut of the straight-leg short itself weren't designed to hold a bunch of stuff, isn't helping.