One time when I was younger (middle school (jr. high)) I had pink eye. And when I woke up, my eye was all covered in crusty eye stuff. Soooo much crusty eye stuff that I couldn’t even open my eye. My eye lashes were stuck together. I had to go to the sink and wash my eye off so I could open it. It really freaked the bejesus out of me. It’s similar to the first time your glasses get COMPLETELY fogged up and you can’t seen anything at all.
One time when I was in Spain (Barcelona, I think), we were on a small side street, waiting outside this shop for some people to finish looking at stuff. One of the girls that was inside looking at stuff starts to walk out and BAM! Walks nose-first into the glass door. Classic.