[ He refuses to look at his moth, who has indeed made a mini-blizzard outside of their house up until the point he found bird eggs. Now the Frosmoth sort of chirrups through the window, wondering where attention in general has gone even if he can definitely hear the two bickering inside. ]

All I've seen is four different sets of eggs that all have your Pokemon attached and only three with mine. I might not remember much, man, but you did teach me what a common denominator is!

[ One of his legs strikes out and nudges at Katsuki with a heel while his face shapes a triumphant smirk. He totally thinks he just defeated his tutor with a math reference. ]