You already know what Mugen is, right? Well, what you may not know is how scary the Japanese Ronald McDonald is. At our sister site Japanator, we actually have a permanent tag for him called Ran Ran Ruu. Check that link if you want to see some really wierd videos.
For now, though, check out this Mugen match that pits Nintendo's Super Mario Bros. (as a tag team) against the Japanese Ronald McDonald. All of Ron's taunts and speech come from Japanese McDonald's commercials. His projectiles are hamburgers and fries, naturally. And they are fighting in front of a Burger King to the tune of "Scatman." God, I love the internet.
Do not miss Ronald's special attack at 55 seconds in, where he slaps a massive "Happy Set" (Japan's term for Happy Meal) on the brothers. Hilarious. Effective. Mario Sandwich.
I'm lovin' it.