It was a typical party at Rolly's house. Most of us were home from college on our winter break and Rolly's parents had some sort of holiday event to attend. Since Rolly had started college, they trusted him a lot more at home alone, so they were going to be staying over at the hotel where their event was being hosted. That was just asking to have a party thrown.
Rolly's parties were always fun, but never got out of hand. It was rare that anyone crashed, so it was usually just the small group he invited plus a few tagalongs. This party was no different.
It was pretty late into the night, with everybody feeling a bit toasted, when I was unhappy to discover the bathroom was occupied. I really had to go, so after waiting a minute or two, I slipped out the sliding door onto the deck. Despite how brisk it was outside, I still went a ways into the backyard before I drained it, rather than just hanging it over the railing. From where I stood, I could see the first-floor bathroom window and it still appeared to be occupied. Once I'd finished and tucked myself away, I climbed the steps to the deck, but wandered over to the bathroom window rather than slipping back inside right away. There were mini blinds and curtains on the bathroom window, but the mini blinds were open and there was a good six-inch gap between the curtains. Looking in, I could see Sandy and Mark going at it hot and heavy, leaning against the counter. Their tongues were deep in each other's mouths and Mark's hands were on Sandy's big tits. Her sweater and bra were both pushed up so I could see the smooth white flesh in his hands. He lowered his head and, as she held her sweater and bra up higher, held her tits up so he could lick and suck her nipples. Her tits were nice and big, with large pink areolas and hard nipples. Her head was back and her eyes were closed as he worked on them. Meanwhile I was fighting the urge to whip out my now-rigid cock, knowing someone else could step out the sliding door at any moment.
After slobbering on Sandy's tits for a few minutes, Mark raised his head and began to make out with her again. Sandy's hands went right to his belt and she started to drop to her knees as she opened his jeans. She got them down just far enough for his cock to spring out, then wrapped her lips around it and deep-throated him. Now his head was back and his eyes were closed as she worked her mouth up and down his tool. You could tell by their pace that they must have been aware that they had to be quick. Sandy sucked his cock for just a minute or two, sliding it in and out of her mouth with deep but rapid strokes. Before Mark had a chance to blow his load, Sandy was standing up again while reaching under her skirt. She pushed her panties down and kicked them away, not watching where they went. She was anxious to get her legs spread and Mark's cock inside her so, as her panties were flying off behind the toilet, she was hopping up onto the counter.