Back-yard tent camping, second round, an attempted circle jerk with me and two friends didn't really go the first time. For the second attempt, I'd filched a pair of worn panties from a girl all three of us crushed on - was going to be a panty-sniffing jerk fest. Something about the panties, the panty-sniffing, it went way further.
Things started, the three of us sort of reclined, facing each other. I had the panties, up to my face, inside out, inhaling from the crotch. We passed them around. It was humid, hot. We wee all wearing "tightie-whities" and T-shirts. I was first to strip, as the panties were making their rounds. When it was my turn again, I felt a wet, unexpected sensation on my twitching cock - one of my buds was sucking me!
It went mad fast after that moment, all three of us naked, sucking, touching, probing. I am hard, oozing, right now thus recalling this.
(Edit: had to pause and come back to this - I got so hard and horny from the memory I had to go cum)
My reaction to first being sucked off by a guy was how weirdly, awesomely good it felt - his lips and tongue on my glans, like it was the most natural thing in the world to do. He'd never sucked cock before, so I got his cherry mouth.
My reaction to my first cocking was equally weirdly hot. I reciprocated wtih the guy that had just had my cock in his mouth. In my mouth, his cock head felt hot, kind of firm-but-spongy, smooth. He flinched when I flicked and licked his piss-hole with my tongue. The thing that got him going the most was me scratching his tight ball sack, while sucking just the tip of his cock.