The above video was a proposed advertisement from comedy group Mega64 for Ubisoft's Jam Sessions an undisclosed DS guitar game. Instead of actually being used, the ESRB put the smack down on the troupe's ad for ... well, we'll just let you watch and find out for yourself. We don't want to spoil it for you.
If you liked that, then be sure to head past the break for the "safe for the ESRB" version.
See also: Promotional Consideration: Party Like a Rock Star