Hah, it personally took me about 10 minutes to get it, but that is only because I've seen something semi-similar to this, sequential wise that is. This chick I know is pure genius at riddles. Either she knows all that were ever made, or she is pretty good. My guess is she is good. Took her about 2-3 minutes to get this one, at most. I was honestly quite impressed. She has gotten every riddle I've thrown her way, and believe you me, I've hit her with some really tough ones.

I went through about 2 months in my life where I was so bored at my cubicle job that I would look for riddles all day, do them, and find more. I'm not bad at solving them, but she is ridiculous.