I have a scar in the middle of my left hand.

I had gotten a milkshake, and I wanted to save more of it for later. So, I put it in the freezer.

After it had frozen solid, I retrieved my milkshake, and found ...well, solid. We didn't have a microwave, so I just took a knife to it. First I tried stabbing down into the cup. That wasn't going anywhere, so i turned it sideways, and held it in my hand and pushed the knife into the side...that worked...but after it went through the entire cup and frozen shake, it pierced me.