I laugh at fart jokes, but not this.
I like video game parodies, even ones that have stale old jokes. I prefer fresh ideas, but oh well.
This flash had original art and original jokes. The music went with the animation perfectly, wonderful job there.
However... jesus christ that was not funny at all.
The first two segments were so slow, and when it finally got to the joke it was... disappointing. All that time spent watching for... what?
The third segment was fairly good as far as mario game fight scenes go. That part HAS been played out a bit, even if it was yoshi doing the thrashing. But the end... probably the funniest joke of the entire series, but thats not too high a cliff to climb.
You got potential, but a second opinion on your script would surely help.