Animation wasn't too bad, but the punchline is lacking. You gave it away right before the delivery. I read a response you posted to someone else's review saying, "It wasn't meant to be funny..." but if that is so, why did you put "funny" in that tags?

Could have been executed better. You give away the punchline before it even has happened. Don't tell us what is going to happen because otherwise it won't be funny.

Quite predictable
It fails to make funny jokes
Perhaps, try harder?