A ride

She gets off of the couch and stands upright again.
"How about a piggyback ride? Just hop on! I'm strong enough to carry you!" You do as she suggests. "Oh, don't get cum on my shirt! Make sure you deal with that leaky cock of yours!" When you climb onto her back, you put one arm around her neck, and use the other to guide her cock to your asshole. You sigh as you penetrate your ass and then slide down the length of her pole. You then tuck your dick down into Dina's asscrack between her own dick and her crack.
"Good idea, but you are gonna get my pants messy instead!"
"It's not touching your pants! It's between your dick and back or ass or whatever."
"Oh, but it might get runny if you cum or get really drippy. But better that it runs down to between my legs and soaks my pants there than having a spot on the back of my shirt. Well...where should we go? Maybe go out somewhere?"
"No, don't be silly," you tell her, but wonder if she wasn't kidding.
"Well, I'll just go upstairs, then. I suspect you won't care where we go soon, as long as it's on me!" The bounce of her step moves you up and down on her dick at a steady pace. Your arms are wrapped around her upper belly and your legs around the tops of her thighs. As she climbs, her cock pushes deeper. When she gets to the top, she stops.
"Liking it I bet. Every new angle is always great." She reaches back and runs a finger around your hole where she penetrates you. "Want to try it faster?"