Is it one of your friend's birthday today? For people with a sense of humour and not easily depressed.

If you don't understand the lyrics, look here:
http://en.yappr.com/welcome/Video.action?videoGuid=B7DAC879-F10E-4579-8B22-D8158C819671&emailCode=AA621046-3A21-4080-8A36-57080633E970
GREAT WEBPAGE FOR LEARNING ENGLISH!