Path, when you have sex in a pool, do you do it from behind or front? Do you think it's a bad habit to ejaculate underwater?
I'm not going to elaborate further on that, seeing as I can already feel the looming spectres of half a dozen mods hovering above me :'( As for ejaculating, it's a matter of perspectives; for me, personally, I'd not worry much about it. For the poor people using the pool later though, well... Location is another factor; I'm reasonably sure that my parents' pool was a lot safer than that one by the bar in Sunny Beach in Bulgaria. It seemed like a good idea at the time though...
i get changed when the curtains are open a lot. Really bad for it actually
And this is a bad habit... why?

I'm pretty sure that ADD/ADHD isn't a spreadable disease.
Lol, how do humans acquire it then in the first place? By fapping in a lake? xD
Seeing as ADHD is a neurobehavioural disorder, I find it rather unlikely that fapping in a lake (or anywhere else for that matter) would potentially lead to you aquiring it. On the bright side, there are plenty of friendly organisms willing to make a home in your nether regions.