Dean shook the water out of his face, blowing out the bit that had splashed into his mouth. "Oi!" he called at Seamus' retreating back. "Pretty sure Justin's making sure it's in working order," he joked, glancing briefly at the area in question with a waggle of his eyebrows and a feeling that makes him shift his arms restlessly. He splashes at Seamus' retreating back in a way that is never going to connect and rolls his eyes.
"No, he's not getting away with it. I'll splash him when he gets back. I'd dunk him but I can probably hold my breath longer," he said quietly with a shrug. He didn't want to harm Seamus, or yank his shorts down, but splashing seemed fair game.
Dean glanced between the two balls his friends held and shrugged. "Dunno what to play," he said, "I mean there's always Marco Polo but that defeats the point of grabbing the balls. Piggy in the middle type thing?" He suddenly launched himself at Seamus who had got near enough, throwing up a huge wave of water by stretching out his arms and hands and forcing it to splash up.