Moira/Gabriel anon here, I think it’d be accidental the first time it happens, she’s just enjoying testing the upper limits of his super soldier physiology, making him run until he drops, clapping him in a set of medical-grade restraints and making him take things that normal humans couldn’t. Then he pisses himself and is super embarrassed (maybe he’s even hard) and she’s just like oho what do we have here. He’s her favorite new toy~ (If you can’t tell already I’m super excited for Moira)