Several times lately I have heard that very grown up phrase come from little Lady Slipper's mouth.
This time we were playing with plastic storage bowls and lids. We were stacking them up to make a pretend sand castle and then having the "waves" come and knock them down. Then we would laugh and build them up again and knock them down again. Suddenly she paused in the fun and said it again: "That's what little kids do . . ." then we stacked a few more and she added a new part, "and mommy's too." I am so glad I chose to stop and play sand castles for a few minutes so I could be a little kid too :)