Obviously!

Your response is to grin, tighten your grip on her waist, and start fucking her with everything you've got. Clap, clap, clap! go your hips on her ass, her cheeks jiggling like Jello. You hear a chorus of impressed murmurs from the audience, and it only drives you on harder. You're close, the peak within your reach...almost....

With a final cry of release, you plunge deep inside Kate's tight hole, the first jet of your load spurting out to paint her bowels white. Distantly, you hear her let out another deep sigh of pleasure, and you feel her ass contract around you; the realization that she's cumming too amplifies your own orgasm. With each wave, you grind your cock in and out of her, filling her with more of your thick spunk, enough that it'll be dripping out of her all morning.

It feels like it takes a long time for you to come back down. You're aware of the spectators still hanging around; guessing at what they're waiting for, you catch your breath, regain your footing, and slowly ease yourself free of Kate's still-twitching asshole. Your cock flops out, half-soft, coated in a sticky mess of cum and lube. A thick drip of your cum escapes her slightly gaped ass, running down to drip past her sopping pussy. She quickly reaches back and pulls her G-string back into place, but the tiny string that is the sole covering for her asshole does nothing to stop the flow.

As the cluster of onlookers starts to disperse and you tuck your cock back into your pants, Kate pushes herself back to her feet as well. You're pleased to notice her legs are a little shaky, though she seems to compose herself quickly. Turning around, she favors you with her warmest smile yet. "That was lovely. Thank you."

Your own smile comes easily. "My pleasure. Damn, your ass is really incredible."

Her smile turns a little proud. "Like I said, I'm pretty proud of it. And I definitely enjoy it."

Seeing her so clearly happy warms your heart. "Well, I'm glad I got the chance to enjoy it too," you say sincerely. "I've gotta get going, though."

"Yeah, of course," she nods. "My husband will be waiting for me."

With a nod of farewell, you turn to head back to your own shopping cart. You actually feel a little winded; seems like you got some exercise. Certainly enough to earn one of those sandwiches.