Love how sweet this is
Dude, I had no idea that the entire audio was taken from Group X. Then again, I have heard their songs before and this definitley seems familiar. What really makes this is the animation. Everything is drawn in the silliest manner possible, especially the Mario characters. Even through this, they manage to look awesome because they're still stylistic. It's amazing how fun a song can be when it's just the same spoken words over and over.
The best example of good animation is when the explosions are happening near the flag. It's amazing how these guys were able to get all of the classic Mario songs in one collection! I had no idea toilet paper would randomly appear. The funniest part was probably in the beginning when they said how the characters looked so similar. Everything is in such a wonderful, silly manner.