All the way with the dogsitter

"I think the only way to deactivate it is to muffle it somehow, maybe by putting it inside something," I said with a leer.

Alison laughed, licking her lips. "I've got just the thing." She scooted forward on my lap until her mound pressed against my stiffness, splitting her nether lips. Alison flexed her hips and pulled my cock up and down through her slick groove. Her pussy felt fabulous. We both groaned. Then she lifted up and slipped my cock head just inside her slit and wiggled her hips as I filled her hot cunt. Her face gyrated through several masks of ecstasy, and I'm sure mine did as well. In just a few seconds, I was completely inside her, and she just waited. I was in heaven.

"I think that the alarm has been deactivated, don't you think?" I asked her.

"Yes, but I still think it might be a danger to the neighborhood. Let's see if we can do something about that," she replied with a wicked grin. Then Alison used her legs to lift up and drop down. I grunted, then fondled her boobs. Her small breasts were a wonder, firm and smooth, with fat nipples. Her tight pussy was a miracle on my cock, slick and pulsing.

"Oh, yeah. Pinch them. Pinch my big nipples!" the hot teenager said. It was obvious that those tits were sensitive too.

I did what she asked, squeezing lightly, then harder. Her mouth opened in an 'O' and she fucked me faster. When I sucked a nipple into my mouth, she shrieked in pleasure.

I could feel her cunt ripple around my embedded stiffness, and that was it. I growled and humped my hips hard up into her as I spouted off inside her tight channel. We both came hard and long, until we finally slumped together, exhausted.