This has to be the weirdest thing I have ever seen. Now I know it's common to try and flog new parents all sorts of stuff they never ever thought they would need, but really, a "pee-pee teepee"?? Hello? Are Americans really that gullible? I can't speak from direct experience of dealing with little boys, (mind, M was quite good at weeing everywhere) but wouldn't a tissue serve the same purpose?
I bet it was dreamed up by one of those terribly enthusiastic amateur entrepreneurs you see on Dragons' Den, with the light of evangelism for their product in their eyes. Run away, people. Very fast indeed. Particularly from anyone who describes a pee-pee teepee as "an ideal baby shower gift".