Port-a-Potties? Seriously?

So the other week I was driving through my SIL's naighborhood and passed a house that was under construction. As we passed, Libby called out "What's that?" "A Port-A-Potty". Then Libby spend a few minutes telling me how the Port-A-Potty will make your hands sticky (can I get an "ewww!" here?) and you'll get in trouble. Don't know where that came from. A few days later we were back up that way and Libby started talking about the Port-A-Potty as soon as we we left Joyce's house. I made sure to drive past that house, but the Port-A-Potty was gone. Libby was not happy about that and was asking over and over "Where's the Port-a-Potty? Where'd it go?" Luckily we passed some construction along Hwy 75 and got to see not one, but THREE Port-a-Potties! What a happy girl I had.

Now, every time we leave the house, I hear "Wanna see Port-a-Potty!". Even though the back way is prettier, I take the highway to Joyce's so Libby can see the blue and green and brown Port-a-Potties. And once we get to Joyce's house, Libby wants to run up the hill across the street so she can see two more in the distance where new houses are being built. And, she keeps asking to see a "pink Port-a-Potty". Do they even make them in pink? Of all the things to be obsessed with, how in the world did she come up with Port-a-Potties?