Here's some fascinating video of the boy.
I'll sum it up if you don't like watching videos.
DHV: Mama
SHV: Can you say dada?
DHV: Mama mama mmmmmm. Smiles in self satisfaction.
DHV (to self): Why does this ring smell like B.O.?
DHV (to self): Who's making my legs go back and forth like that?
I'll work on making my own laughter more presentable in the future.