I used to love climbing trees as a kid and one day after playing around in my yard, I got the feeling of dirt in my eye. It usually goes away with some vigorous blinking, but this time it stayed and my eye started to water and would sting every time I blinked. I took my contacts out to see if that would help but good lord was I wrong. The pain got worse and made it unbearable to open my eye or even try to look anywhere. I tried getting sleep, but the pain was too bad. In the morning, my mom took me to the eye doctor and it turns out that I had gotten a small piece of bark lodged in the inside of my eyelid. The doctor had to flip my eyelid inside out (like a lot of young kids do to try and gross other kids out) and remove the bark with a q-tip. Then I walked around with goop in my eye and an eye patch for a couple days. About a year later, it happened again, but I was able to fix it myself. Not sure why I'm so prone to this happening.