not sure this is the right thread but whatever.
yesterday i was using the shower hose to inflate myself (just so you str8s can stop reading here, im male), and sometimes i dont feel like bothering with cleaning and sanitizing it (im a clean freak) so i just turn the water pressure up and hold it some distance away from you-know-where.
the issue with this method, other than being fast and imprecise, is that i sometimes "lose" the angle of the stream and stop inflating.
so there i was, jorking it and inflating, at one point i "lose the angle" so i start trying to find it again.
in my frustration i turned the water pressure up a bit more, and while i did find the correct angle, i must have hit my prostate directly with the jet of water because i came immediately.
so… yeah.
you can cum while inflating.
not really sure it counts because it wasnt hands-free though.