but Miss Pop is in there

So the other day I send Sadie, my almost 3 year old, into the bathroom so go potty. She comes right back out and says to me, "Mom, I can't go right now because Miss Pop is in there." I am lying on the couch and really have no intention of getting up, my sweet husband is close by so I ask him to go figure out what Sadie means and take her to the potty. They both go in the bathroom and then both come out. Brian then says to Sadie, "When Miss Pop is done going then you need to go, o.k.?" "O.K.," she replies. So apparently Sadie has an imaginary friend. Funny!