Wow, these are great! Were these drawn from live models, or photos? You lines are so precise, it amazes me how you can get these so accurate with so little effort. I have been doing gestures lately too, but they do not look anywhere near as good as yours D:
I don't mean to be rude, randomly butting into a conversation, but...
" being a creeper in public places"? So basically, are these drawn based on people you just see walking around? I always find that difficult, because... well, it's not like they would hold a pose and wait patiently while you draw.
I know this study or form. This is force drawing, it's one of the most essential principles in drawing the human form. It's great to see an artist following this. It shows that they're extremely passionate about art.