I knew this song before, but I didn't know what this song is about. If you're like me, just listen the song until you understand it :)
By the way, my advisor here has two children and one is 7 year old boy, Nicholas.
And here is funny story. He told me that Nicolas had heard this song from somewhere and kept singing this song everyday. And, it's already funny. You should agree with me if you know this song :)
What funnier (worse?) is that, just imagine you are sitting in the living room with your guests and your 7 years old boy's wondering here and there while singing this song, 'I like bit butt~~~ blur blur~~', while you're talking with your guests about serious subject!!
It's really funny. After I heard this story I cannot help laughing till now. kekeke~