Ren barely hears him, so deep is his focus on trying to grab that phallic candy. After about thirty seconds, when he has to come up for air, he's also got a candy dick between his teeth. Some of his hair is plastered against his face from the water, and droplets of it drip steadily onto his shirt.

He then nods at him, and plucks the candy from his mouth in order to speak, indignant rage building up.

Until he sees Kaph's expression and processes it properly. He tries, desperately, to hold onto that anger, but busts out laughing instead.

It's just as well. He's forgotten his argument for the time being.