Why?

We are firmly in the middle of the "why" phase.  For those of you not familiar with this phase, it goes something like this:

We're walking home from town yesterday, and Babykins points to a random man walking ahead of us...
Babykins: Mommy, where's that man going?
Me (umm...I'm supposed to know where everyone's going?  Ok, he's wearing a suit and walking into a residential area, so I make an educated guess.): He's going home from work.
Babykins: Where's his home?
Me (Seriously?  Where's his home?): I don't know, Babykins.
Babykins: Why?
Me (Why?  Does she want to know why I don't know?  Or have I missed a transition in the conversation?): I just don't know, Babykins.  I don't know where everyone lives.
Babykins (Thinks about this for a second, then takes a breath, and...): Why is he going home?
Me: Because it's getting late.  It's time for everyone to go home for dinner.
Babykins: Are we going home for dinner?
Me: Yes.
Babykins: Why?
Me: Because it's getting late.  You and Babyroo need to have dinner, then a bath.
Babykins: Why? (Then she fully comprehends my last sentence.) But I don't want a bath!  Why do I need to take a bath?
Me: Because you've been playing all day and you're dirty.
Babykins: Why?
Me: Look!  There's our house!  How about some TV?

And for once, Babykins didn't ask "why".