Pretty funny considering the subject.
While this isn't anywhere near as good as the one by Golfinho, this was pretty funny none-the-less. Plus, I'm also appreciative that you didn't submit this as a video considering that it would've been pointless. (Save it for Stop-motion, live action, 3D CGI, and overly large .swf)
Graphics: Not bad when you consider your angle variety and fitting color selection. However, the animation is a mixed bag. On one hand, I like what you did with the thwomps, but most of it suffers from a lack of easing. Thus, it looks very wooden and I would recommend that you study movement for a bit.
Audio: Mason did a great job as always in the music department, but the voice acting came off as an afterthought. It felt really unneeded.
Content: While this isn't your best submission, but I thought it was pretty funny considering the subject. (Mario has been done to death over the years.) Your direction was excellent considering that you're an adept action director. For a first time at comedy, you did a good job with just one joke.
[+]
-Good direction
-Funny
-Nice music
-Small filesize
[-]
-Weak voice acting
-The animation could have been a bit better
-Overused subject
Overall: Here's an eight from me. (4/5)