Sam I Am

I've become very interested in getting Sam to say his own name. For quite awhile now, when I've pointed to Sam and asked him "Who's this?" he's responded, "Baby." Cute, huh? This probably derives from a month-long serious interest in Pattycake sometime over the summer ("put it in the oven for Baby and me"). Lately, though, I've been trying to reinforce "Sam" by pointing and telling him, "It's you, Sam!" So now what does he say? I ask "Who's this?" and he cheerfully replies, "You!" Oops.