I also tried leaving my belt on, but I found it is easier to just undo the belt, rip them open, piss and then button up form the bottom again. i always wondered why guys undid their belts to piss, now i know.
never bother with going through the fly no matter what jeans. always undo the belt, undo the top button and unbutton/ unzip the rest and pull out from there. no awkward fishing around that way and you can put everything back in place easily
Are you out of your mind?.. Is it really that much of a hassle to undo your belt and the buttons to pee.. I wear 501's and never had this stupid thought or needed advice on what to do.. How about taking a crap?.. Are you ok with that?..
I just came across this post and had to comment. I love 501 jeans and wear them commando. I love to undo my belts and slightly lower the top bearing my pubes even if I wiz in the woods. I gbet a lot of attention this way A friend saw me do it and he always left the top and bottom button undone.