Show him another benefit of a thong

A naughty idea pops in your mind, driven by your now hard cock.

"You know, there's another benefit to thongs." you say.

"What's that?" Ben asks, still feeling himself up.

"Lie back down on the lounger as you were, I'll come over."

As he lies back down, you jump the fence and walk over to him. You walk over to him and admire his beautiful ass. Kneeling on the long chair, hoping it can take both of your weights, you move the string to one side, exposing his hole. You release your dick and lean down to whisper in his ear.

"Thongs have easy access." you coo, pushing your hard rod into him.

Ben moans loudly as his backdoor is invaded, though shows no sign of resistence. You slowly push into him until your pubes tickle his mounds. You bottom out, removing all but the head, before slamming back down into him. With the position you're in, as well as the straining on the chair, you decide to make this a slow and sensual fuck. Your hands find their way under him, toying with his nipples. He groans appreciatively. You lick his ear and whisper to him.

"Fuck your hole is so tight." you grunt, continuing to thrust in and out of his sweet cavity, "I just knew you'd love the thong. It makes you look so good and so sexy and so slutty. Fuck, who's my good, sexy, slutty daddy?"

"Me..." Ben moaned.

"Say it."

"I'm your good, sexy, slutty daddy."

"Say it again." you were getting close, thrusting harder.

"I'm your good, sexy, slutty daddy!" Ben groans, humping back into you.

"Again!"

"I'm your good, sexy, slutty daddy!" he cries.

As he shouts, you slam into him, flooding his ass with your cum. The lounger breaks from beneath you as he cums from being fucked. The two of you are moaning messes as your orgasms sync. Slowly, they subside, as you begin to pull out of him. You watch your cock dislodge, a bit of cum escaping to make his ass look like a cream filled donut. You put the thong back into place before getting up off the broken chair. Ben turns over, the pouch damp with splooge.

"I think I'm going to have to buy more of these." he grins, panting.