In a Southern California summer in the early 1980s, right after my senior high school graduation, I began going to my friend Steven's house several times a week. When his parents divorced earlier that year (mine had divorced almost ten years before), Steven had taken over a large shed in the back yard. Emptying it of tools and old paint and a dead rototiller, he turned it into what he called his 'fort.'
Inside were a stereo with record player and bookshelf speakers, a 19" TV and VCR, and bean bags to sit on. We'd drink Bacardi rum from a pint bottle chased by Coke from a 2-liter bottle and smoke a little weed while listening to our favorite 'stoner rock' music, then go swimming to cool off before returning to the fort for more drinks and hits. Usually, we'd then watch a movie on VHS after which I'd leave for home on my bicycle.
Once out of the fort I had to fight my way past some junk on the side of the house to get through the gate to the front yard. Steven's mom, Sharon, giggling at my difficulties, suggested I go through the house instead. She was in her late 30s and not really attractive to me but had huge tits that she displayed well in tight tank tops with spaghetti straps, and so I was glad to spend even a few moments around her. I wondered if she spotted the boner I'd get as I paused to talk with her for a moment in her kitchen and then awkwardly step around her to the front door. I'd have to walk my bike for a block until my rod calmed down enough to sit on the seat.
Well into July we were in the fort 3-4 days a week. Mostly it was the same routine, but over time the movies Steven was getting from his older brother were getting racier and soon were outright porn. Sharon started coming outside to do minor yard work when we were in the pool, standing ready with towels and sandwiches, and sometimes getting in the water with us. It seemed odd, and I'm sure she knew we were smoking and drinking in the fort, but she never said anything, so we kept at it.
One day she came close and suggested I should find a better-fitting suit than the old baggy one I'd had for years, saying that the girls would like it when I swam at the beach or rec center pool. I did so, and a few days later she complemented me on how much better I looked, especially when I got hard seeing her tits and thinking about touching them. After that Sharon seemed to be outside more often, and dressed a bit more sexier each time.
The porn movies became too much to handle just sitting there, and one buzzy afternoon Steven made the first move -- he boldly pulled his dick out and start stroking as we watched a big-breasted brunette (like his mom) modeling and then giving the stud photographer a blow job. I'd been jerking off at home for a few years already, but this was the first time I was going to do it in front of someone else. With only the slightest hesitation I, too, pulled my dick out and began stroking it. We didn't look at each other -- the first time, anyway -- and soon we each came on our chests. He had paper towels nearby and we wiped our cum off, then jumped back into the pool to cool off.