I will NOT link the video, because it's trash. I should not have to tell you why a song by a man who has literally said "It is a pleasure to degrade a woman" is trash, but if you must know, take a look at Sociological Images' post comparing the lyrics of the song to what real-life rapists have said to their victims (huge warning for discussion of rape at the link!).
There's a lot of misogynistic media out there, to be sure, but I take particular issue with Blurred Lines because of how popular it is. It spent all summer breaking different records while it perpetuated misogyny and rape culture on a global scale. (Do we need a breakdown of rape culture? If we do, here's the Wikipedia page.) As a sexual assault survivor it turns my stomach to hear my teenaged sister singing this song that uses the words my attacker used against me when she's hanging out with her friends.
So do your best to keep Blurred Lines from selling any more than it already has! Point out to your friends that it's a gross, terrible song, and support other artists. For example, here's an awesome new song from a 17 year old girl from New Zealand! Her name is Lorde, the song is Royals, and as soon as I heard it I bought the Love Club album. I can't stop listening! She also just broke the record for longest female reign on the Alternative chart, and she's right below Robin Thicke on the Hot 100!

