Did you know? ...

Identical twins have the same DNA. That means that if one commits a crime, and their DNA is found at the crime scene, they cannot use it against them because they can't be sure that it was theirs and not the twin's.

So I'm on my way to work this morning. And as I turn the corner, the sun shines in on my windshield and reveals numerous foot prints on the glass. Oh, my. Is that on the inside or the outside? I rub my finger across the glass. Nope, it's on the outside. I didn't even bother to hit the wipers and clean it off, I just admired the artwork for a while. Hmm, that looks like a size, oh, boys 12, I would guess.
Then I thought, there's no way to identify the culprit. It's doubtful I'm going to get a signed confession. "Is it not true, mam, that there are not one, but two persons in the house that wear a boys size 12 shoe? So can you say, without any doubt, that these foot prints in exhibit A do, in fact, belong to the defendant? Or could it be, that they just might belong to..." (dramatic pause) "... his twin brother?!"