This is why Flan got locked in her room, isn't it? Not because some claptrap about her not knowing her own strength, but because she pissed off the Head Maid.
This is why Sakuya prefers Remilia. At least Remilia has some knowledge about this stuff.
I'm about to snap.Inexpensive yet delicious, indeed low-fat milk is an ally of the masses ♪This low-fat milk is refreshingly tasty ♪Sakuya's boobs don't have much fat either, so you make low-fat milk too, right ♪