Heh, Heh, Heh.

During one of our family Wii sports sessions, Cr made another good shot on one of the games.

Cr: "Heh, heh, heh."
(a few moments of silence)
Z: "Heh, heh, heh."
(small pause)
Z: "I'm trying to be like Dad. Only I don't have the voice. Or the vocabulary."