Variants of "No"

Evan is going through a phase where he likes to spell out certain words in his replies, e.g., instead of replying "no", he'd said "N, O".  I'd like to think it's due to his love of spelling but it's probably his more rebellious side showing.

Today it occurred to me he used to go through a perioud where everything was either "definitely yes" or "definitely no".  I miss that phase :)