Mike and I had been best friends since high school, straight as arrows, always chasing pussy and swapping stories about the girls we fucked. That night after the bar closed, we crashed at his place, beers in hand, both single and horny as hell. We put on some straight porn on his big screen, the kind with two chicks going at it, but Mike kept clicking around until he landed on two muscular guys sucking each other off.

We laughed at first, calling it weird, but neither of us turned it off. My cock started twitching in my jeans as I watched one guy deepthroat the other, and I noticed Mike adjusting his bulge too.
"Fuck, that looks intense," Mike muttered, his voice low and rough. "You ever wonder what it's like?"
I shrugged, trying to play it cool, but my dick was rock hard now. "Nah, man. We're straight. But… shit, that guy's cock is huge."
We kept watching, the air thick with tension. Mike's hand drifted to his crotch, rubbing slowly over his jeans. I did the same without thinking. Before long we were both stroking ourselves through our clothes, eyes glued to the screen where one dude bent the other over and started pounding his ass. My breathing got heavy. "This is fucked up," I said, but I didn't stop.
Mike looked over at me, his eyes dark. "You hard as fuck too, huh? Let's just… see what it feels like. No big deal. We're best friends."
I nodded, heart pounding. We unzipped, pulling out our cocks. Mine was thick and leaking already, his was long and veiny with a fat head. We sat side by side on the couch, jerking off while the porn played. It felt different with him right there, watching each other. "Your dick looks good," Mike said dirty and direct. "Stroke it slower, let me see."
I did, and he matched me. Soon Mike leaned closer. "Fuck it, let's try." He reached over and wrapped his hand around my shaft. The grip was firm, different from any girl's, hotter somehow. He pumped me slow at first, thumb smearing my precum over the head. I groaned and grabbed his cock in return, feeling it throb in my fist. We jacked each other off like that, raw and clumsy at first, then finding a rhythm. "Shit, your hand feels better than I thought," I admitted, hips bucking.
Mike didn't waste time. He dropped to his knees between my legs and licked the tip of my cock, tasting me. "Salty as fuck," he growled, then took me into his mouth. The wet heat was intense, his tongue working the underside while he sucked hard. I grabbed his hair and thrust deeper, hitting the back of his throat. He gagged but kept going, slurping noisily, spit running down my balls. "Suck that straight cock," I muttered, the words spilling out filthy. He moaned around me, the vibration making my toes curl.
I pulled him up and we stripped fast, both naked now. I pushed him onto the couch and returned the favor, wrapping my lips around his dick. It stretched my mouth, the taste musky and male. I bobbed my head, getting sloppy, gagging when he thrust up. "Yeah, choke on it," he said, voice strained. We switched positions, sixty-nining on the floor, sucking each other in a frenzy. His balls slapped my chin as I took him deep, and I fingered his tight hole lightly, testing.
Mike flipped me onto my back. "I wanna fuck you," he said, raw and direct. He spit on his fingers and worked one into my ass, then two, stretching me open while I stroked my cock. It burned at first but turned into a deep ache that made my dick leak more. "Do it," I told him. "Fuck my ass."
He lined up and pushed in slow, the head popping past my ring. I grunted, gripping the carpet as he sank inch by inch into my virgin hole. "Tight as hell," he groaned, bottoming out. He started thrusting, deep and steady, his balls slapping against me. The pain mixed with pleasure, every stroke hitting something inside that made me see stars. I wrapped my legs around him and pulled him harder. "Pound that straight ass," I demanded. Mike went faster, skin slapping skin, sweat dripping off him onto my chest.
We switched, me on top riding him, then doggy style on the couch where he railed me from behind, one hand reaching around to jerk my cock in time with his thrusts. "Gonna fill you up," he warned, voice ragged. I pushed back onto him, taking every inch. When he came, he buried himself deep and pumped hot cum into my ass, groaning loud. The feeling pushed me over; I shot thick ropes across the couch cushions, my hole clenching around him.
We collapsed, breathing hard, cum leaking out of me and sticking between us. Mike pulled out slow and we looked at each other, no regret, just heat. "That was the best fucking nut I've had," he said. We cleaned up a little but stayed naked, talking about doing it again soon. By morning we were at it once more, this time with me fucking his ass while he begged for it dirty. Our straight friendship had a new edge, and we both knew we'd keep exploring it.