Baby Wee Wee (Pi Pi)

Now I had one of those dolls that "goes to the bathroom" when you give it water when I was a little girl, but when I saw this video I had to squirm. My little doll was pretty gender neutral, but this one is really accurate to the point that I'm a bit uncomfortable.

This doll is sold in the UK, by the way, so I'd love it if someone from the UK could fill us in on this. Is it a popular doll? Am I a prude for being a bit grossed out by it?