Pretty decent but...
I have to agree with everyone else who is saying that it doesn't match up to bigfoot's standards, but in it's own right it's very enjoyable. Your animation is pretty good, and some methods you used I liked better than bigfoot's, but if you were trying to copy the style, I have two suggestions to make it work better.
Try to keep each individual joke short. Bigfoot's Castle Calamity, and Hammer Bro Mario are both so funny because they fires joke after joke at you, and they don't give you enough time to think about the jokes individually, and they certainly don't give you enough time to recover from the jokes, resulting in the possibility of non-stop laughter, even if some of the individual jokes aren't that great. (Castle Calamity is the better example here)
Use a more upbeat background tune. Going back to bigfoot, he uses Athletic from Yoshi's Island for Castle Calamity, and a ragtime version of one of the main songs from Super Mario World. Both are very upbeat, and closes the gap between one gag and another, even when that gap is relatively large. (Hammer Bro Mario is probably the better example of how well this works)