The proposal

You turn around and attempt to wave the car down, when it comes to a stop next to you the window rolls down. Inside you see a fairly obese man "XChange huh? Hop in"

Not thinking clearly you do exactly that, when you close the door he speeds away. After about 10 minutes he pulls onto an off road and parks out of view of the main road. He turns of the car and turns to you.

"I'll take you all the way to town on one condition... I figure you've been used and abused so all I ask is for you mouth."

He undoes his pants and without thinking you lower your mouth on to his half erect cock. Your own actions take you by surprise but you decide you'll do anything to get to safety.

You feel his cock quickly growing in your mouth, in no time at all he is rock hard and you can only open your mouth just enough to accommodate his girth.

You continue to just go to town and you suddenly feel aroused... You can't quite tell if you actually want to be fucked or if it's the XChange playing tricks on your mind.

Either way, the arousal gets to be to much and you decide that a few more minutes of this and you will need to ask him to fuck you.