Seriously. is this some kind of bizarre developmental stage no-one's told me about? My 3 yr old has been obsessed with them for about half a year. Everywhere we go (e.g. park), he wants to see the fountain or water feature if there is one, stares at it for ages, complains if there isn't one. If given a paddling pool/ bath all he wants to do is design fountains (putting pourers and sieves on top of each other). I get that playing with water is fun, but he seems obsessed with fountains in particular. nb. he is a boy...is this all about willies really?! :)