First off, I’m a guy. I was laying down on my bed and got aroused from something I was watching and in the heat of the moment without thinking masturbated into my underwear and shorts. It’s the first time I had done it like that in a while and kind of panicked as I rushed to go to the bathroom to clean myself up/shower. I’m planning to wash the clothes in the morning (not sure if I’ll wear them again because knowing what I did in them). Once I got out of the shower I went back to my room (which I share with my brother, but he wasn’t in the room when I did it). I started to feel guilty for how fast it all happened and for doing it in my underwear and shorts and am thinking things like “What if I didn’t wash myself good and still have semen all over me?” “What if when I was on my way to the bathroom some semen dropped out and fell onto my brother’s shoes and clothes that are on the floor?”