Day 8: A song you know all the words to.

I don't there really is any song that I know all the words to except like Twinkle Twinkle Little Star or something. I just don't have the brain power for stuff like that. But there are song where if they are playing I can sing along with and not mess up. Does that count? Anyway this song is one I've been a little obsessed with lately (mostly last week). So I kinda know the words to it.