To all the comments saying their junk has been caught in their zipper, I know a guy that swears by jock straps. Says they don’t bunch up or make you sweat a bunch since it’s basically just a strip of fabric over/around Wingus and the Ping Pong boys with some elastic bands to keep it there. I tried one once and threw it away after a day of wearing it so they’re not for everyone, but could be something to look into.
If your genitals aren’t made for jousting… thongs are the closest I can think of I guess? I don’t have any experience with having that configuration