Envy has no particular love for children. For his own reasons. He still has to say something.
Childhood pleasures don't trip Envy's brain, except Envy has issues.
"Oh, yes. Summers when I was a child, we'd pick berries for 'Mom' to eat." His voice is cold, but not angry- he is more concerned with the color of the sea in China, if he wanted to be honest.