The Grinch in my son's eyes

My 6-y-old: Mommy & Daddy! His heart is so big now!
Mommy: What do you think that means?

My 6 y-old: Um...

Daddy: Does it mean that he loves strong?

Mommy: And that he will be nice to the Whos?

My 6-y-old: Yeah, and he can pick up sleds!