At least they are not in uniform pants since those are made for said baseball butts. His butt may not be as safe as he thinks if so.

Yamamoto laughs at the expression, flopping down on the sand beside the other boy he flashes a grin and props his hands behind his head.

"Would so..." Simple as that, deny all you want, keep it up and Yamamoto is like to pet his head just to show him how cute it would be. He is tempted to do it now but he will hold out, for the moment at least.