He closes his eyes and replays the mental images he's collected: the way Mark's mouth falling open in a silent moan as he digs his thumb into his slit; Jackson fucking into his own fist with sharp thrusts, Mark's name spilling off his tongue in soft grunts; Yugyeom biting his lower lip and blushing hard as he plays with his balls with one hand and strokes himself with the other. By the time Bambam reaches the thought of Youngjae whining low in his throat as he teases his foreskin with his fingertips, he's completely hard, cock flushed a deep pink and curving towards his stomach.
His fingers are shaky as he spreads precome down his length, and he picks up the pace, fingers tightening and twisting every time he reaches the tip, letting out small gasps at how damn nice it feels. It's like small sparks of electricity are humming beneath his skin; his mind feels a little hazy but in a really good way, and he lets it drift to think about Jinyoung and Jaebum. It's not like he hasn't seen my dick close up before. And it's not like Bambam hasn't fooled around a few times with girls, even messed around with Yugyeom once or twice, but the thought of his hyungs together is somehow enticing - Mark and Jackson, Jinyoung and Jaebum, touching, and shit, he can see it in his head so clearly it's embarassing. Mark straddling Jackson's lap as they make out, messy and demanding, with Jackson's hands sliding up Mark's shirt and down his pants; Jinyoung laughing breathlessly as he sinks to his knees in front of Jaebum-
Bambam's so into the idea that he doesn't even notice when the water shuts off or when the door opens a few seconds after that, but when his eyes open, the first thing he sees is Jaebum, towel tucked around his waist and hair still dripping water and he's attractive like this but- oh shit. Oh shit. Oh shit oh shit oh shit oh shit.
Outside, someone - Jackson? - screams, "The water turned off! Bambam's not out yet!"
Jinyoung's howling laughter is unmistakeable, and then there's the sound of the others scrambling to get up and feet thumping down the hall as they leave him to die from embarassment. Jesus, Jaebum's still staring at him, and Bambam is too busy concentrating on melting into a human puddle and draining into the sink to be able to read his facial expression.
Bambam stands there holding his dick for what seems like an eternity and he's sure that Yugyeom's got nothing on his blush right now but he doesn't know what to do, he doesn't know what to say, what could he possibly even do in this situation to-