I'm sitting here chuckling about squating beside the road... as well as the gross of the porta potty...

OK, here's the deal on 1) not drinking enough so you don't have to pee, and/or 2) holding the pee too long in your bladder...

Bonking from dehydration, potential outcome from #1; or a urinary tract infection, potential from #2... NEITHER one are something I want to have happen... vs. braving the porta potty, or baring my booty beside the road...

SO...

just whip those bike shorts down and go!