The key signifies starting him up, as if he was an engine. He is suggesting that a woman start him up using not that key, but her sexuality. It is a metaphor.

He was trying to make it gayer than the original video but THAT IS SCIENTIFICALLY IMPOSSIBLE!

Too much variation in voice.

dude needs to go away. also, what nocash said.

What an odd choice for Tay. Too bad he failed so bad.

I actually like his voice on this one. Probably because he didn't write it. He does need to stick to things in his range though. I'd love to hear him do some Tom Waits or Nick Cave.