She tops the fuck out of Sammy

Robin smiled evilly at Sammy's answer to her offer.

"Sweet. Class doesn't start for another hour, and I heard someone saying coach isn't showing up today, something about indigestion. So, you wanna hit the locker rooms and let me fuck your brains out?" Sammy was taken aback. Robin was so forward about this whole thing while she was embarrassed about someone knowing what she had in her pants! Slowly and bashfully, Sammy nodded.

Robin quickly grabbed Sammy's wrist, almost dragging her across the soccer field, towards the door to the locker rooms. Once they entered the building, Robin led Sammy to her locker. As she unlocked it, Sammy got a glimpse of what lied within. Robin pulled a black harness from her backpack, then reached back in, procuring a long rubber dildo with a screw pattern on the flat end, seemingly for attaching it to the harness.

Sammy's eyes went wide. She hadn't seen a dildo that big in person before. She could barely wrap her mind around the fact that it could go inside her. Robin gave her a look.

"What, never seen a strap on before?" She asked, a genuine concern entering her voice.

"Not one that... big." Sammy replied, still shocked. Robin hefted the heavy dildo in her hand for a second.

"I mean, it is a bit big, but I'm sure you can handle it. I'll just need to warm you up with something." Sammy's eyebrows raised.

"Like what?"

"My fingers dummy!" Robin laughed. "What else? Now sit on the bench and spread 'em!" Sammy slowly sat down on the thin metal locker room bench, honestly a little scared of what was about to happen. She eased down her gym shorts, revealing even more of her erection through her underwear, and the rosy red tip poking out from the waistband.

Robin was nearly drooling by the time Sammy freed her bits, now showing Robin her healthy sized nuts. Robin knelt down between Sammy's legs and lifted her nuts in a less than gentle manner, eliciting a moan from the smaller girl's mouth. Behind her balls was a cute, puffy, pussy that dripped with the juices of a very horny girl.

Robin ran her index finger along Sammy's folds once, then twice, then plunged them deep within. Sammy's breath shook from the sensation, and she almost reached her hand out to stop Robin on instinct, but stopped herself.

Robin thrusted her fingers aggressively, not giving any time for Sammy to adjust, causing Sammy to reach her peak quickly, but unlike when she rubbed off by herself, now she wasn't cumming. She gritted her teeth and tried to thrust into Robin's fingers to get more friction, trying desperately to pass the peak, but with no luck, she stopped Robin.

"I don't know what it is Robin, but... I can't cum? I think I need something else, but I don't know what's gonna turn me on that extra bit."

Robin thought for a second.

"Well, y'know when we were out on the field? And the soccer ball hit you in the nuts? Did that... turn you on? You were pretty hard..."