It’s the sad reality of subway stations that if there is a reasonably concealed area or a small corner someone has probably peed or pooped in it. I was basically the kid in this comic and my girlfriend was the one who gets credit for the keen observation. The other thing she told me was about the I-beams in subway stations. Most of them at the bottom slant outward from the inside, but apparently at Union Square there are some which don’t, which makes them targets for urinating and pooping in. Yep.