whoa buddy, take it easy. i said i was just messing around with you. no need to lash out on everyone.
secondly, this is discussed all the time. if you want a more detailed answer you can look around but basically they send you what looks like a real check/money order or they send you money through a fake escrow service, and you send him your car. by the time the check bounces or you realize the escrow service is fake, they have your car, and you have no money.
