Wow. He humped her face.
I thought the drawings and animation were really, really nice, but the song got on my nerves quickly, and for the most part it seemed kind of uneventful. It's mostly Mario humping Peach in various positions, and often it just looks like one character placed on a layer above the other (meaning, you'd see both Mario's left and right foot in front of Peach, for instance).
I would gladly watch more stuff in this style, but this particular movie didn't really do much for me.