The wonderbra for ya butt.
I get asked about jocks a suprising amount, mostly cos I wear them a fair amount and have some art of my 'sona in them so people get curious.
I ended up saying the same things over and over so I thought, might as well write a quick 101 guide to jocks!
For me, a jock is genuinely more comfortable than regular underwear. No wedgies, more supportive on your junk and a lot better for the hotter and sweatier months.
Although now they're more for aesthetics, jocks do work for their original design intentions, which is wear for working out and activities.
Jocks are specifically a kink wear item, either because you get to show off the goods, or as part of a sporty/gym kinda fantasy, both of which work for me as well.