"So I don't --" was as far as Sasuke got before he was sinking under the water, surface tension broken by the added weight and his distraction. He had barely enough time to gulp a breath of air before his body was seizing up in instinctive response to the cold, the weak winter sunlight far from sufficient to warm the lake.

Muscle control returned after a second, Sasuke struggling free of Obito's grip to break the surface with a gasp, sputtering: "What was that -- ?!"