When i lived in my car i spent most nights at Dennys. The setup to get in was weird, and they had this glassed in foyer, and the drunks would walk face first into the windows and leave face prints. Where i sat i could watch it happen, and watch as they walked in. I tried not to laugh until they walked away. One night i was sitting there and hear this loud boom. I jumped it scared me so bad and i thought a car hit the building. Nope, just some chick walking into the window. She hit it with her face, that hard. I did laugh that day.
And i worked at a Walmart, often near the exit. There was this little sliver of a window barely enough to fit through, if it were open, right next to the big automatic sliding door. People regularly walked into that window.