The weirdest thing just happened to me. I rubbed the corner of my eye with my right index finger and felt a sharp pain in my fingertip. I realized there was a splinter in my finger, so went to the bathroom to get tweezers. When I pulled the splinter out, I realized it was a bottom eyelash! It wasn't harder or different in any way than my normal ones, so I found it quite strange that it could enter into the thickened skin of my fingertip.