Here is the link to my old favorite joke.
Now, this is incomplete. You're supposed to follow it up with the "Confused Interrupting Cow" joke, in which case the interrupter makes the sound of a cat, monkey, horse, ferrel child or some other animal that doesn't sound like a cow. Why people don't take the time to properly finish a joke and then post on youtube, I'll never know.
Here is the link to my new favorite joke.
I am not being the least bit melodramatic when I tell you that my new favorite joke has changed my life for the better.