After returning from an overseas tour, while in the military, I was horny as usual; I went downtown and wandered around for awhile, before spotting an 'adult movie theater.' I bought my ticket and went inside, then stood in the back for a few moments to let my eyes get accustomed to the darkness; the sunlight outside had been quite bright, but as my eyes began to focus, I could now distinguish what was going on around me.
Off to my left, I saw an elderly man, about 60, and he had his cock in hand as he masturbated--while keeping his eyes glued to the screen; the scene he was watching was of a beautiful girl being double-penetrated by two, well-hung studs. She was sandwiched between the two of them, and one guy lay under her--his giant cock buried inside her ass; the other was on top, fucking her pussy with long, vigorous strokes. My own cock was now beginning to stiffen, and the old man was starting to groan, as he spewed his cum into a handkerchief.
About one-fourth of the way down the right side of the theater, a guy and his girlfriend were obviously fucking; she was sitting on his lap, her skirt up around her waist, and he was strongly lifting then forcing her down onto his stiff organ. She had her head thrown back, and was trying to stifle her cries of pleasure, as he pummeled her cunt. Seeing this made my cock rise to full staff--aching for release from my tight trousers.
I didn't notice it at first, but off to my right, two young guys were together, and, while one watched the movie, the other knelt between his legs and sucked his big cock; he was obviously doing a good job of it, because the recipient of the blow job placed both hands on the back of his partner's head, and encouraged him further. Soon he groaned aloud (no one was the wiser, though, because of the moaning and groaning on the screen), and tightly held his lover's face to his groin--as he pumped his seed down his friend's throat. Finished, the one on the floor got up and sat next to him; they immediately shared a deep kiss, and, although I couldn't be sure, I think they also shared the load of sperm.