VIDEO: Rebecca Black vs. Justin Bieber: Which song is worse..??

Rebecca Black became extremely famous after singing one of the most horrible songs ever. On the other hand Justin Bieber's "Baby" is the most hated song on youtube with more than 1 million (!!) dislikes. But which song do you think is worse..?? Which song do you think, should have never been written..?? Which is more annoying..?? Watch the video below and tell as which single is more awful!!