Pilots are in the cockpit for long stretches at a time. And Stormtroopers have all that armor on all the time. Not a lot of chances for traditional bathroom breaks. Which leads to lovely possibilities.

So what do they do? Are they used to just going automatically when in their gear, which is designed to take care of it? Does that lead to "accidents" when not in the flight suit/armor? Do they wear the diapers under civvies, to avoid those being embarrassing?

Basically, I want one (or both) of them uncontrollably pissing themselves regularly and the other totally getting off on it.

If Finn's the incontinent one, no humiliation, just comfort and sweetness from Poe, pls. Otherwise, go nuts, feel free to add any kink but scat.