Peter's Day At The Beach

“Hello, Peter,” I said, opening the door and throwing my arms wide to greet him. “My goodness, you’ve grown!” I looked over his shoulder as I hugged him and saw his mum Cathy, sister of my partner Greg, walking up the path behind him. She smiled knowingly.

“See… I told you you’d notice a difference,” she said, stepping through the doorway to give me a kiss on the cheek. Then she raised her eyebrows. “Still sure you want to put up with him for a week? He’s a big lump to have hanging around in a small apartment.”

“Of course! You’re welcome any time, Peter.” I turned back to the gangly teenager, intending to pat him on the head and ruffle his hair. But now he was taller than me, that didn’t seem like such a good idea. I smiled instead and ushered them past the open-plan kitchen and into the lounge.

“I’ve got the week off work, so Peter will be good company. We can go into Cambridge, there’s lots to see and do. And Greg’s taking us to the beach tomorrow. He’s popped into town for a couple of things. Be back soon.”

We chatted over coffee and biscuits. I learned about Peter’s hopes for the A-level exams he’d just completed, and the summer job he was going to before college. Finally Greg returned with fresh salad and we all ate lunch. Soon after, Cathy set off for the two-hour drive back to Canterbury and Peter settled in, making himself at home in our apartment.

Then it was Sunday morning and we headed to the coast to enjoy the summer weather, have a swim and soak up some sunshine. I love the freedom of the beach, wearing my favourite white bikini and feeling the sun and wind on my skin. I could tell Peter was enjoying it too. He had on these big baggy shorts and while we were running around playing frisbee his excitement became obvious. Was it the fresh air turning him on? Or the sight of his aunt in her white bikini, I wondered? Although Greg and I weren’t married, I’d always been ‘Aunt Mandy’ to his favourite nephew, who was becoming a handsome young man now he’d turned eighteen.

I asked Greg to put sun cream on my back and shoulders. Out of the corner of my eye, I could see Peter watching us, following the hands spreading the cream over my back, and I realised his eyes were glued to my chest. I’m quite proud of my breasts – more than a handful, according to Greg – and I guessed seeing them straining my bikini top was helping maintain Peter’s hard-on. It was quite a confidence boost for a woman almost twice his age.

Peter suddenly jumped up and said he was going in the sea to cool off. As he got up I saw the front of his shorts were sticking straight out – he had a nice erection in there! Greg hadn't noticed, but once Peter was in the sea, he started rubbing the sun cream over my shoulders and down onto my breasts.

I laughed at him and said, “Stop that! We can't let Peter see you fondling my boobs here on the beach. He will have an accident in his shorts!”

Anyway, things calmed down. Greg and Peter swam in the sea and larked about while I sunbathed. We all played frisbee some more then had a picnic lunch. I lay down afterwards on my towel and Greg went back into the sea for a longer swim.

I started chatting to Peter. Was he enjoying himself at school? Did he have a girlfriend yet? The sort of thing that nosey aunties are supposed to ask. He obviously liked talking to me and I noticed he was staring at my boobs most of the time. So I said “Peter, I’m going to lay back and close my eyes for a few minutes. Would you mind keeping an eye on things?” He said that was okay.

He thought I was asleep, but I kept having a crafty peek at him and he was staring hard at my breasts. I thought I’d have a little fun and give him a thrill… so I let my legs fall apart. Then I raised one of my legs so he could see in between them better. Naughty Aunt Mandy!

Sure enough he moved so he could stare at my bikini-clad pussy, and he started rubbing at the front of his shorts. Mmmm, just the thought of him getting horny looking at his aunt’s crotch soon made me wet, and I knew he could see my bikini panties getting a damp patch – my bikini is not really for swimming, as it goes transparent when wet.

So my pussy was getting juicy and my bikini was becoming more see-through as he watched. He kept checking to see if I was still asleep, as he rubbed his shorts, and I could see him leaning over to get a good look and even a sniff of my wet pussy.

Convinced I was asleep, he looked up to check that Greg was still out of sight, then got onto his knees and turned his back to me. Soon I could see his right elbow moving – he was wanking himself right there on the beach! I was both shocked and delighted. It was awesome.

In only a minute he was cumming. I saw him speed up and then grunt and clench his buttocks as he came. He jerked his hips forward three or four times, each time with a stifled grunt. Then he looked over his shoulder to check my eyes were still closed, turned back and finished shaking his cock. He stood, pulled up his shorts and moved the sand with his foot to cover up his pool of fresh semen.

At this point I thought I had better ‘wake up’, so I moved and said dreamily, “Are you okay Peter?” The poor boy almost jumped out of his skin.

He stammered, “y-yes Aunt Mandy. But I want to go for another swim now.”

I said, “Of course Peter, go and have a nice swim before we have to head for home.”