Peep Peep or pee pee

Lilly has recently been figuring out that her pee pee and poo poo come out in her diaper. Often times when she has gone poo poo she will come to me and point to her diaper and say poo poo, especially when she has gone in her crib at nap time or something. It really started when she had some diarreah (sp?) and I came in to get her and found that the poo had totally leaked out the side and she was playing with it all over the crib and examinig it very closely in her hands....yummy! Anyway now I can say, "Let's change your diapers" and often times she actually lays down and waits for me! How nice is that! But she is a little obsessed with telling me she has pee pee and poo poo. Many times she doesn't actually have anything but I still feel like I want to change her diaper just to reinforce the principle. But anyway we were watching Dora this morning and she kept running up to me and telling me she had pee pee and grabbing her diaper. I was like, "YES! you have pee pee?" And I am getting ready to change her diaper just feeling so proud of her for telling me she has pee pee. And then she grabs my hand and takes me to the TV where the little bird on Dora says Peep Peep. She looks at me and says pee pee and grabs her diaper. How must that seem to her that a birdie says pee pee?