S began pestering F to hand over the board book he was perusing.
"S," I said, "Let F read that book. There are lots of books you can read but fewer he can. That book is for little kids."
S looked at me and wisely responded, "I'm a medium kid, mom. That means sometimes I am big and sometimes I am little."
Oh, so he caught on. There are times I tell S and C that they can't do a certain thing because it's meant for 'big kids.' Other times, I fall back on the 'that's-for-little-guys' reasoning, explaining why they cannot have a wanted item. Aren't kids so great at noticing and articulating certain truths in the world?