I haven't read all the replies but the fact that Mummamia states the song is about 'r a p e' is solely their interpretation of the song .... they just love sensationalism on their site.
Pop culture is out there and you cannot change what is current in the world, but you can control what your kids are exposed to in your home and in your car. When my DS is old enough to understand I will play age appropriate radio stations and CD's and expose him to a variety of music, but video hits will not be allowed in our home.
I don't think kids these days are given an opportunity to listen to a broad range of music, pop is ok in moderation and when screened, but play them some Jazz, some orchestra, some 70's, even some heavy metal..... but show them that there is more out there than degrading pop music. Good music is good for the soul!