DD is 21 months and I've started asking her what she did at daycare that day. She always replies "babies!" then usually follows up with "blankie" or "night night." She's probably telling the truth, since 90% of her day is usually spent putting dolls and stuffed animals to sleep. But I can't tell if she actually understands the question (and the past tense!). I can't wait until she can tell me more! So I'm just curious - when did your LO seem able to truly answer "what did you do today?"