My Rude, Forward, Blunt Son - LOL

My son cracks me up. But he is probably being rude. There is a new family in our building with a boy and a girl, both older than Callan. Callan is outside playing and the boy is on his deck outside. And Callan starts talking to him, and this kid is just looking at him, not responding. Just kind of checking Callan out. And Callan, frustrated, finally yells to him "Can't you talk?" Heh. Good thing the kid can talk! Sheesh!