My teacher is kinda obsessed with Robbie Williams..?

It's so weird, she goes on robbiewilliams.com and buys all the stuff there, even like keyrings n stuff, and she puts posters all over the clroom, and we're all like, we don't want to look at robbie williams! lol! Do you think this is weird? I don't find him one bit attractive so I don't understand this obsession lol! Like why?