I should start a tally of how many times I hear this phrase- but it wouldn't be accurate, because I've already heard it too many times to count. This last time the woman added a "little lady" on the end for good measure. I like it when people switch it up a little bit. I usually reply with something like, " Yep, it's the best kind of busy." And I mean it too.
Meanwhile, on a side note, I keep hoping someone drop me the sarcastic line of "Don't you know where babies come from?" so that I can use this AWESOME line from my friend Emily's grandmother:
"Well, i'm not sure, but I think it has something to do with sneezing because every time I sneeze, someone says 'God bless you' -- and then He does."