He came asking us to help him open the snacks in his hands. We told him it wasn't snack time. He then told us his older siblings have snacks downstairs. Fine, we'll open the snacks for you, but you have to eat in the kitchen.

A little later I'm talking to the older ones and chiding them for eating snacks outside the kitchen. "But [3 year old] gave us snacks downstairs, then ate his own upstairs." Three year old smirks.