One More Thing from Samuel

I forgot to mention the other thing that is going on with Samuel this week. He has a real obsession with "pee-pees". He points to himself a lot and says "pee-pee". He also will sometimes bring a toy animal to me and point to its nether regions and say "pee-pee". I don't know what it's all about! We did buy him a potty a few weeks ago and I try to talk to him about going to the bathroom, but we don't talk about it that much. I really don't care about him identifying "pee-pees" - I just find it really amusing and more than a little strange. I usually repeat, "yes, that's his pee-pee" and generally play along because I don't want him to associate that with shame. What is your experience in this area?