As you run along the boardwalk, you spot her. Another runner, going in the opposite direction. You size her up quickly. Early 20's. Caucasian. 5'5" tall. Her brown hair is darker than her lightly tanned shoulders. She wears it in a braid pulled through the back of her royal blue baseball hat, and it bounces lightly as she keeps up a steady jog.
Her chest bounces lightly too. Despite her breasts being crammed into a overly constricting black sports bra, there is still some visible bounce there, which you appreciate.
Her ass though. Her ass is the main event. And it doesn't bounce lightly. It thunders. Even in her black spandex shorts, her huge round ass wobbles and shakes, as she runs past you.
You run a good bit further, to make it less obvious, before making a hard U-turn. You catch up to her once again, and slow to match her pace about 40 yards back. Her big butt is mesmerizing. You imagine her sitting firmly on your face and refusing to let you up. Next, you picture her yawning and reading a magazine as you spank her giant ass with a ping pong paddle. Finally, you envision her getting relentlessly fucked in both holes. You smile at that last one, anticipating what's about to happen. Your cock is rock hard, as raise your right arm, and take careful aim.
The unremarkable looking wrist brace on your right arm suddenly hums to life. It glows neon yellow in various places for just a few seconds, before launching a softball-sized neon yellow orb that zips towards its intended target.
The pulsating orb strikes the bare skin of her lower back, right in between the bottom of her black sports bra and the top of her spandex shorts. It does not dissipate on impact. Instead, glowing neon-yellow energy-based tentacles burst forth, and immediately spring into action.
The biggest tentacle first loops around her narrow waist, to gain purchase. Smaller tendrils then quickly snake up and down, binding her wrists behind her back, and winding around her knees.
She is forced to stop in her tracks. She glances down at her encircled stomach, and then peeks over her shoulder at her bound wrists. Her eyes are wide with shock. Her mouth forms a perfect little "oh" in surprise. She peers down at her big ass, which juts out like a shelf behind her. Her hourglass figure is only accentuated by the glowing tentacles now coiling tighter and tighter around her bare midriff.
She feels the tentacles binding her knees begin to snake up the backs of both thighs. She has a moment to look concerned, before they slide lewdly over her huge wobbling ass. She can feel the warmth of the twin tentacles radiating through her spandex shorts, and she feels a shiver up her spine.
When they reach the bare skin of her lower back, both of the prowling, groping tentacles stop. They pause a moment, and seem to turn towards one another, as if conferring. Then they both plunge decisively past her stretchy waistband, and into her spandex shorts.
She can feel both tentacles thickening as they elide over her fat ass, which is slick with sweat. She is not wearing underwear, and she shudders as she feels the tip of one intruder nosing against her pussy. And she gasps as, seconds later, she feels its twin slowly burrowing in between her thick cheeks, towards her other hole.
She says a quick little prayer to herself. Not a real prayer. More like a, "please go easy on by big fat butt, please." It's her last fully coherent thought before both tentacles simultaneously push their way inside of her.
She is relieved to find that the warm glowing tentacle gradually pushing upwards into her tight asshole is somehow self-lubricating. No such help is needed for the other tentacle, which is slowly thickening to fill every inch of her suddenly soaking wet pussy. She lets out a low moan as she gives in, surrendering her sopping wet cunt to her thick new friend.
By now, a small crowd of joggers, cyclists, and dog walkers has gathered around, to stare dumbfounded at the short woman with the big ass, who is getting relentlessly fucked by some weird tentacle-thing, right there in the middle of the boardwalk. There are murmurs of shock, but no one makes a move to intercede. A few take out cellphones, but you press another button on your wristband and all the phones shut down. This is a one-time only show. A few people gasp (and you smirk), as she builds towards her first very public orgasm.
"Omigod. Omigod. Omigod." The pace has steadily quickened ever since she surrendered her dripping cunt to her new best friend. "Omigod. Omigod." She can feel it building, and she knows her orgasm is going to hit her like a tidal wave. "OH MY FUCKING GOD!"
She thinks that she may have screamed that last line out loud. Her eyes roll, and she stands up ramrod straight on her tiptoes, with her wrists still bound tightly behind her, as she begins to squirt wildly.
She floods her poor stretched-out spandex shorts once, and then twice, and then a third time. Her tight black shorts go from wet as fuck, to fully saturated, to completely soaked through.