Here is a video that will always make you smile.  No matter what type of mood you're in.

 

Seriously, you won't be able to help yourself.  Try to watch and not get a big smile on your face.

Don't believe me?  Save this web page, and the next time you're in a crappy mood come back and watch this video and see if it doesn't improve your mood.

If it doesn't, I will give you your money back, guaranteed.