Alright, well since most people don't get
this I will explain... but it sort of
defeats the purpose. If you don't understand
the humor the first time then it's not
funny.
The point of the comic is simple. Why would
he tell the dog to stay? The dog is
obviously not going anywhere. So telling the
dog to stay at it's current position is
pointless. He's being redundant because the
dog isn't going to go anywhere. Because of
this the boy doesn't need to tell the dog to
stay where he is, because the dog won't jump.

Well that's all there is to it
