Cleared Keg
If you thought that a keg was just an empty bucket with a hose running through it, congrats, you're pretty much correct. Next time you and your friends clear out a keg full of beer, know that this is what it looks like inside. Unless you want a great story, try to avoid cutting it open just to double-check...
A Photocopier
Something that you use every day probably doesn't see a whole lot of care put into it. Now, by seeing the inside of one of these, you can finally figure out why the printer keeps jamming. This thing is so intricate that looking at it once is like looking at a painting...