Barely

Damn, thinking about that hot little girl's hot little pussy was a bad idea.

All of a sudden, you're squirting your cum into her.

"So soon," Mara says. "I'm not done."

You free your mouth from Anna's pussy just for a second. "Keep going, then."

"Ah. You are still hard. I can work with that."

She starts grinding away on you, then grabs one of your hands off Anna's butt and puts it on her breast.

Where Anna's tit was muscle and firmness, Mara's is soft and sweet. You squeeze it gently, then slide your fingers to her nipple, playing with the diamond-hard point of her nipple while you work your tongue-magic on Anna.

A minute of that and Mara's pussy convulses on your cock. "Oh, yeah." Her voice is just breath.

"Is my turn." Anna spins away from your mouth pushes Mara off of you and mounts you backward, her ass facing your face.

"She likes reverse cowboy." Mara might be a genius when it came to math but she could be Captain Obvious when it came to describing Anna. The girl was going nuts on your dick.

"Can I sit on your face, too?" she asks.

Well, her pussy is full of your semen. Do you really want to eat that? Uh, no. On the other hand, do you really want to turn her down? Again, no.

"Uh, yeah, sure."

Mara laughs. "It's okay. I eat cum because a guy likes it, not because it's something I actually enjoy. I won't make you eat your own semen. Just make out with me."

"I can do that."

Kissing Mara feels great. But it's not so great that you don't feel the tightness of Anna's pussy. That girl, with her wild dancing, has honed muscles all over her body... apparently including in her pussy because it grips you tighter than even your hand when you jerk off.

You were sure you'd have to wait a while before you could cum again but the combination of Mara's sweet kisses, Mara's tits in your hand, the sight of Anna's hot tight ass bobbing up and down on your dick, and the **** tightness of that twat abruptly has you feeling your balls move as you prepare for another orgasm.

Fuck. Cumming too soon once was an embarrassment. Doing it twice in a row on the same outing would be a humiliation.

"Tell me about e8," you whisper to Mara.

"Really? Now?"

"Uh, I need some distraction so I don't..."

Mara giggles. "Someone needs more practice with his sex. Too bad. The deal is one time only. Otherwise professors would never get any work done."

"Really? Does that mean--"

"That means you can only demand it once. And this is it."

Shit. That is fair, you guess. Still, Mara is right. You need a lot more practice. Hell, even if you didn't need more practice, you'd need more practice... if that makes any sense. You didn't realize what you were missing with Amber but you've found out now... and you definitely don't want to go back to what you had (or didn't have) before.

It wasn't e8 but Mara's distraction worked. All of a sudden, Anna's pussy is spasming on your dick and she screams as she cums, her hot little ass clenching and unclenching faster than your racing heart. And you let her have it... huge wads of cum you were sure you didn't have go shooting up her twat.

"Good fuck," Anna says with a breath between the words. She's breathing as hard as you are and her normally pale face is red with exertion and orgasm bloodflow. "I eat cum out of Mara now. Okay?'

You're certainly not going to say no to that.