Pull back and let him cum on you.

Although you cannot deny your arousal, you're not sure you want to have some stranger cum in your mouth. You pop his dick out of your mouth and start jerking him faster and faster. He seems to approve enough and starts to thrust harder into your clenched hands.

“FUCK YES!” He shouts in deep pleasure.

You stare at the cock, mesmerized by it. Suddenly his cum starts bursting out of the head, hot sticky ropes of jizz spew across your face. It lands on your cheeks, over your nose, and most of it lands on your lips. Without thinking you open your mouth and let some of the cum drip in. The moment it touches your tongue you feel a rush of pleasure.

The taste is amazing, and you quickly start licking your lips to get every bit of it. You cannot explain why or how, but you cannot get enough of it. You close your mouth, and swallow it all in one gulp, a soothing feeling runs down your throat.

“Holy shit, she's a slut!” One of the men watching exclaims, while slowly jerking his own dick.

You sit there, looking up at the man you just brought to orgasm, his dick still slick with cum and your spit. Then realize your hand is rubbing your pussy, and may have been for some time. You look around and all the men are standing agape, stroking their cocks in your direction. Nothing matters now, all you want, all you can think of, is tasting more cum. You reach over to the closest stranger, and tug his dick towards you.

“Yeah that's it” Many of the men grunt in approval.

The next man puts his hands to his side, and tilts his head back, awaiting your mouth. You stare hungrily at the tip and notice a bead of pre-cum emerging. You stick out your tongue and run it over the head, getting every bit of the pre-cum. The taste is much sweeter than the other mans cum, but lacks the heat and a certain “oomf”. Determined to get another load you plunge your lips over his cock, and start sucking enthusiastically.

You give this dick even more attention than the last, confident to get some semen as quickly as you can. You try techniques you've seen in porn as a man; running your tongue up and down the side of the shaft, rubbing the head with your thumb while jerking him off, even twirling your tongue around the tip while sucking him.

Then you suddenly remember something from one video that pushed a man over the edge, and decide to give it a shot. You pull down his pants and underwear, revealing his hairy crotch and legs. Trying to ignore the other men around you, you work his dick with your right hand and bring your left hand to his balls. He jumps at the feeling, and actually falls back against the wall, but quickly acclimates and moans in enjoyment. He sits down on the ground and leans back, giving you easier access to his manhood. With a boost of confidence that you are doing the right thing, you lean forward and raise your ass up and continue to suck on him.

You can tell he is getting close and start to lick him with more vigor. Sounds of moaning and sucking echo through the alley, and only heighten your pleasure. Your hand still massaging his sack, he starts to thrust into your mouth. Engulfed in the ecstasy and ready for more cum you don't realize one of the men has walked up behind you and grabs your hips. You realize the position you have taken has inadvertently revealed your soaking wet pussy.
“I'm going to enjoy this!” The man behind you starts rubbing his cock on your crotch. You pause from giving a blowjob for a moment to look back.

The man is the slightly chubby one, and his hard dick is larger than any of the other men's. You get the feeling you should try and stop him. It's one thing to give a stranger a blowjob, but getting fucked by one? Not to mention you are in fact a man in a woman's body. You don't even know if she is a virgin.