 Good morning, John. I recently, you know, noticed, as you do, that my glasses were disgustingly filthy. Usually when I notice this, I will just go about my day. And that's what I did. And then later I realized that they were still super filthy. And then a day after that, I was like, okay, I'm gonna clean my glasses. But then I had a thought. What exactly is on them? What is all that stuff? And I also realized that I have a microscope. And so I continued to not wash my glasses for seven full days. And so now it is time for me to show you what is it? Just what is it? Because I can do that because I have a microscope. Let's go. Warning from Hank from the future. What you are about to see is not great. Oh, green. Why is it green? The mucus. Okay. Well, there's a big something. What's that? Why is it a color? Those are all just like individual little dots of grease. That down there is a skin cell. Oh, wow. Oh, God. Is that a hair? That must be a hair with just some, just some sebaceous stuff on it. You can see the scratches on my lens too. That's interesting. Mostly I'd guess that these are skin cells or just like flakes of skin. I think it's what's happening. And then hairs. That's a big scratch. So one thing that I'm going to try now with one side is to actually put a slide cover on. And, you know, it's about, it's roughly the same as what we were looking at. Oh, gosh, just flakes of skin. Lots of flakes of skin. Oh, that's definitely a fiber. Jeez. What is happening? How is that even stuck? I mean, I guess it's tiny. It's this tiny little thread that came off of some of my clothes or a bed sheet or something. Oh, that's a big ol' hair. Whoa, it's huge. Oh my God. How is that on my glasses? We need some anti-stick technology on glasses, you guys. I'm so sorry to everyone in my family for never cleaning my glasses. And I'm so sorry to all of you for like subjecting you to my face boogers. And, you know, a similar story on this, on this lens. Skin cells aplenty. Just flakes of skin. Occasional threads and hairs. And lots and lots and lots of globs of oil. Here's another hair for a thread for you. What? Those are salt crystals, I think. I'm just guessing, but they look too rectangular to be organic. A drop of sweat that dried up, maybe. That's kind of cool. Ah, I hate it. It's like the fricking surface of mercury up in here. The thing I didn't expect was all of the globs of oil. Admittedly, I haven't washed these glasses in a week. Does it just leap off of my face? Oh my God, we are factories. We make so much stuff with our bodies, and it is upsetting. Oh, I have to go. I have to go shoot SciShow. No, terrible. And I have to clean my glasses in order to do it. Is anything else an eyelash? It's tiny. Probably an eyelash. Oh God, I'm going to get some soap and water, and I'm going to clean these boys out right now. Oh Lord, well, John, oh, there's still a slide cover on that one. Wow, glad I didn't go in my eye. Remember to clean your glasses, and that's really the whole moral of this story. I'm so glad that we got to learn these things together today. I'll see you on Tuesday. Oh, okay. That's why there's a sandbag on there.