Swimsuit Malfunction

We put down our towels as I watched her lay down her towel first to enjoy her cheeky bikini flashing just enough of her jiggling ass. She giggled and she looked back and said, “Are you going to join me, sir?” I quickly laid down my towel and laid down on my tummy with my ass my was in the air as well. “Oh very nice! We might need to put some lotion on those buns so they don’t get too toasted.”

“Oh I can do it, Rosa. I wouldn’t want you to have to do that…” I say and she reached into her bag for some lotion.

She interrupts and sits up as she squirts some cool sunscreen on my ass. I shriek as the cool lotion hits my hot buns. Her soft fingers gently rub in the lotion as I lay back down and enjoy her touch. “How is it feeling? Feeling good?” I nod as she giggles. “This darn thing is in the way. Can you lift your hips real quick?” She asks me as I do as she asks.

Before I can ask why, she quickly undoes the strings of my speedo. I gasp as I suddenly felt my bathing suit pulled out from under me. “There we go that’s better.”

“R-Rosa! What are you doing?” I ask about to sit up and take back my speedo. Suddenly she sits on my back as she immobilizes me.

“I’m not done yet. Just sit there and enjoy yourself,” she said as her hands returned to my ass cheeks. I went back to laying down as I hoped not too many people could see my exposed genitals from behind. I could feel my little guy roaring to his 1.5” erection as I laid there with a mixture of horniness and embarrassment.