Minor Dad W!
So I have 2 kiddos under 3. Since my son (now 2.5) started talking, i have stressed he says thank you to almost everything. Yesterday and today, I caught him saying thank you for playing (or at least the 2yo jargon way of saying it) to the random kids he played with at the park and this morning, I handed him his A.M. milk and he told me "Thank you". I couldn't be more proud of my son.