Currently, any bathroom breaks in this scenario would employ a high-tech solution called an adult diaper. Yup, they can put a man on the moon, but... that same man might have to take a dump in his pants.
This is where they've turned to experts: namely, um, you.
A competition called the Space Poop Challenge (amazing name, by the way) is attempting to crowdsource a better way for astronauts to relieve themselves in space than by channeling their inner baby.
NASA is currently accepting submissions on crowdfunding website HeroX to find an "in-suit waste management system" that could work for "up to 144 hours" to get rid of "fecal, urine, and/or menstrual waste." Submissions should be better than a diaper, and if your idea is chosen, you could win up to $30,000.
If you are not the average person, and you have some really above average ideas, head over to their page and start thinking big.
Give them your best, or maybe, like, your number two best idea.