Yeah, get a plug.

“Yeah, go get a buttplug, I like the idea of my cum sloshing around inside you while you run. Make sure it’s a big one, so you can really feel it deep in there. Wouldn’t want you to be too comfortable, would we?”

“Certainly not, master,” she said with a perhaps less genuine smile than before, “After all, I’m just a fucktoy and my feelings don’t matter. I’ll make sure to pick one that hurts me a little when I walk, so I’ll be in pain for you the whole time I’m running.”

“Good girl”

A moment later, she came back downstairs.

“I’m heading out… I hope you like watching me for the window. I hope it gets you nice and hard again so you’ll want to use me when everyone else is done with me.”

“I have no doubt that it will,” I said, and with that she stepped outside.