It's telling you that pirated games and game systems (like sold in streets and at large malls, not ROMs) are inaccurate and glitchy copies (true). It does this by showing a live-action humorously messed-up Mario level, which will hopefully be funny enough that you remember it the next time you're pondering buying that 837-games-in-one NES machine at a table in the Edmonton mall.
Napoleon Dynamite is awesome and uber, but made somewhat less so by people quoting 30443x times.