I'll get to the part "when I fall down You pick me up. When I am dry You fill my cup." and even though he is nursing, I can hear him smile. (If you've ever been a nursing mother, you know what I mean by hear!) then I get to the end and he stops what he's doing: "gin, mommy?" And every time with out fail, on the second go around, when I sing the part "fill my cup" he stops and repeats, "fill cup."
I love the legacy songs like this will speak into his life over the years and especially that he's picking up on them so early.