We've taught him to say please (more like "PEAS"!), thank you ("cank ew"), and welcome ("gelcum"). He almost says "excuse me" when he belches, but it sounds more like "beep beep" which I guess probably makes it more worse than better
Anywho, what ever happened to saying "Thanks" or "Thank you" or "You're welcome" or even "no problem"?
Does politeness die from age, or are we just in a 'no time to be polite' generation?
 Actually, there was quite a bit of confusion, here. He used to say 'thank you' by repeating what we said. But after a while we started saying "you're welcome" when he said thank you, so he thought he was supposed to say 'welcome' instead of thank you when you handed him something (got all that?)