It is darn catchy, and I don't know why you should be ashamed to admit that 🙂
I generally am not ashamed of things, especially not my taste in music/movies/TV shows/etc. I recently became a Britney fan, I mean, come on, Gimme More and Piece of Me are great party songs, you have to admit! Also, Standing in the Way of Control by Gossip, great song to dance to.. Many Spice Girls songs, and even Backstreet Boys (though I never used to listen to them when I was 10-11 and they were popular among my friends). Hm, what else..? I just am not ashamed much, I guess...