I walked in the house and Troy says " Mama, Mama look"

I turn around and he is showing me his belly and jumping at the same time. I say" You are jumping?"

He is like"No, tummy tired"

(I) "Oh your tummy is tired?"
Troy "Yes tummy tired because I'm jumping"

I tell you, he cracks me up sometimes. Now when he calls us he goes "guys", I wonder where he got that from?