Interesting concept, neet idea for an episode, however the execution is pretty bad.
When the characters started talking, you should have lowered the volume of the music to its bear minimum. Lower it enough, so that we can hear the guys talking. It can continue to play, but just lower tone down the decibels.
Since the premise, from what I can gather, is that sculptures, paintings and various other forms of art in a museum, have come to life and are doing things to ease their boredom. Bearing that in mind, I guess we can't hope for fluid animation, since they're inanimate objects. However, I feel that using pictures of actual painings, in stead of painting those paintings yourself in your cartoonist style, is cheap. The mouth animations leaves things to be desired. I suggest making an expression for every letter of the English alphabet, so that it can appear more natural. Having more details like teeth and tongue would make it more detailed and more interesting.
The joke was seen coming a mile away. That's not the problem though. I don't understand how that woman was so calm to seeing a statue telling her a joke. Wouldn't she freak out? Gasp at least? Her actions seem unatural in such a unexplainable situation. Works of art are talking to her and she doesn't flinch.
Cool idea, but it's sadly unfinished and unpolished. Hopefully next episodes will improve and expand upon the concept. I'm not good with numbers, but I guess I'll give it a 2/5.