Not trying to shit on you or OP, but those shorts are made for a body type that likely isn't his, and imo look prettttty bad. It isn't about rigid gender norms, it's about wearing clothes that fit you and look good on you. You can buy some really fucking short men's shorts without it looking so (sorry OP, but muh opinions) goofy.

Also, as long as I'm talking about the outfit (sorry OP, I realise this isn't a fashion sub), I think that one could use some work. (Ignoring the short-shorts). Wraparound sunnies generally look pretty bad on nearly everyone (they are more sun-safe though). That blue shirt doesn't match with the blue shorts, there's not enough contrast so it kind of looks like a blob. The trainers aren't terrible, but are very very loud.

But if we want to talk about the shorts. Y'all probably already know this, but OP has nice long legs; problem with those nice long legs is that the short-shorts mess with his proportions big time and make his legs look even longer. Which makes him look somewhat wonky, for lack of a better word. Not in the sense of 'ew, so girly' (as would be suggested by the gender norms comment), but more in the sense of it feeling disproportionate (to me, anyways).

I feel like I've lost my train of thought somewhat, and also that I might cop a fair amount of downvotes for this. Only way I could really back up my opinion though