"You're the one who-----" Gasp, as he's taken under, then a wet noise when he comes up, splashing at James in retribution. "---started this!" Oh. James Potter. You little shit. You are in so much trouble right now, and damn, how can you manage to look go soaking wet too? Stupid Potters.

Pulled under by James, with James's arms wrapped around him, Scorpius kind of maybe might have reacted a little slower than usual because he liked that. James's hands on him. They're bigger than Al's hands.

This time, when they come up, Scorpius splutters, coughing up water and squinting against it in his eyes. "Okay, okay!" he spits. "Merlin, you're obnoxious."