Both, obviously!

"Whoa!"

The shock of two hands gripping your bare hips, and the warm penis sliding between your buttcheeks distracts you from Amanda as you look around. A scrawny ginger kid, with freckles and glasses, grins nervously at you, "Hi! My buddy and I saw you two from over there and just had to join in! You're up for butt stuff, right?"

A powerfully built guy with short black hair and tan skin positions himself behind Amanda, easily pulling her heart-shaped ass up to his cock. You vaguely recognize him as one of the football players, though you can't remember his name; he winks at you, grinning as he handily spears your partner with his thick rod, making Amanda moan with pleasure on your dick. With Amanda humming away on your aching-to-burst penis and the ginger boldly reaching around to fondle your balls, it doesn't take much convincing for you to just moan and lean forward over the senior girl's cum-stained back. The kid doesn't waste any time, plunging his long (if not very thick) erection into your virgin anus.

"Shit, dude! Aren't you fucking tight! This your first fuck today, or something?"

Wincing as he rams into your rectum, you think about how it's your 'first fuck' ever. And it's distinctly uncomfortable! Despite it not being that large, the guy's cock feels invasive and unfamiliar inside your body, shifting and stretching your anal cavity with little regard for your comfort or pleasure. The invading penis is glowing hot, raising your overall body temperature and making you sweat, or at least that how it feels as the ginger kid keeps thrusting into your rear. Do people really, truly enjoy this? This has to be why most girls (at least, before you changed the world) stuck with vaginal sex. Speaking of, Amanda is having a ripe ol' time underneath you, moaning and groaning as she continues to blow your cock like a champ, but only barely holding herself up as the football player slams her pussy with an unrelenting stride. He's got an impressive rhythm going, almost twice the speed of your own penetrator, and keeping a steady pace too. She looks like she's loving every second of it.

As the ginger's cock makes a particularly gut churning dig into your bowels, you get an idea. If Amanda can enjoy getting fucked that much, you can too! With a twist of the mind, you change the sensory response of your anus to that of a vagina.

"GAAH, GOD, OH FUCK," you shout, completely unprepared for the explosion of sheer pleasure which suddenly radiated from your ass. The football player laughs at you as you all but collapse on Amanda, planting your face in a sticky splatter of half-dried cum. The feeling is intense! It's as if every nerve in your body is lighting up with every grinding, digging, delving thrust of that wonderfully warm cock in your ass and you can barely mumble your admiration as drool slips from your lips. The ginger gets the gist of it, though, and redoubles his efforts, thrusting deeper, harder, and faster into your shaking body - you almost black out, your vision tunneling as hitherto unreached levels of rapture blanket your hazy mind. A sharp whistle jostles you from your delirium, and you wearily look up.

You see a cock.

The next second there's a hot dollop of cum in your eye as that cock bursts forth with its bounty, unloading spurt after spurt of man-goo into your face. You don't react - you can't react, except to moan as it gets in your mouth and on your tongue. At the same time, whether by pure chance or subconsciously willed by your power, streaks of hot semen overflow around the ramming dick in your butt, slithering its hot mess down your trembling thighs. In the same instant, your own cock decides to remind you that you're still a man, by launching a powerful, thunderous mass of semen down Amanda's throat - the poor girl barely has time to gag before you blast her again, overfilling her mouth and painting her cheeks as she pulls away coughing.

"Whew, great fuck as usual," the big guy compliments Amanda, then turning to smirk at you. "Never seen a guy take dick quite like you, kid. Don't forget that there's plenty of pussy to fuck too."

The two walk off, leaving you relatively alone with Amanda who looks you over, giggling, "Aww, James! You've got Brian's cum all over your face! That's so cute!"

With a wan smile, you shrug, "He didn't really give me a choice, did he? Just looked up, and bam! There it is. You're one to talk, by the way."

"Hey! There's nothing wrong with being a good little cumdump! Way to not last longer than your first foursome - now I'll have to wait to have you fuck me properly."

Looking down at yourself, even as a weak drizzle of semen leaks from the tip, you draw Amanda's attention to the fact, "I'm still hard, y'know."

Her eyebrow raises and a smirk lifts her lips, "So you are... Wow, you've certainly got spunk. Well then?"

The bell sounds, signaling the end of class for the day. Amanda's looking at you expectantly, her head tilted to the side as your cum slides down her cheek. God, there's so many things you want to do to her, all at once! This orgy is fun and all, but you're going to keep getting interrupted... maybe she'll come back to your place to make it a little more personal?

"Hey, this is great and everything, but...," you trail off, looking around you at the various teenagers fucking. Just as you wonder at the lack of pregnancies, you notice that several girls are, in fact, showing a baby belly. You suppose frequent conception can't truly be avoided when sex is nearly constant. "Why don't we go back to my place, and I can give you a proper fuck?"

"Is that the best you've got," Amanda giggles, hoisting herself off the floor. "I dunno... Leo'd be pretty upset with me if I took off without him..."

You suddenly realize that, even though you have the power to do it, you don't want to **** Amanda to come with you.