What is the best way to turn a guy on?!

There's different things that turn different guys on. Start out kissing them, then when it gets more intense, try doing some different things and see what it does to him... And like Chance Bee said, whispering in his ear and kissing his neck are always good. You could also try biting his neck a little bit, or scratching your nails down his back. I did that when I made out with my last two boyfriends, and both of them LOVED it... but those are the only people I really have any experience with, so I'm not sure how useful that is. Hope I at least helped somewhat :P

Like whispering in his ear and kissing/licking his neck. That will get him turned on before all the clothes start coming off.

Bring me a Capt & Coke wearing only a thong and high heels...(and a burger)

Take out your chi-chi's, grab hold of his crotch, and put those moneymakers in his face

Make out with him and grind on him.