Those of us old enough to remember the original Sonic the Hedgehog games know he was once the violet to Mario's rose; the primary competitor to Nintendo's platforming protagonist. Those of you too young to remember probably just know him as a character in Super Smash Bros. Brawl. Regardless of your attachment to the spiky blue mammal, best to prepare yourself for one of those "What did I just watch?" moments as the realities of being a real hedgehog are explained in cartoon form.
From what I can gather, this is a promo clip for "Animation Domination High-Def": a regular Saturday "block of cartoons" aired on FOX in the US. In isolation, it's oddly informative, very disturbing and the song... ridiculously catchy.
It's also mildly NSFW, featuring a bit of animated gore, a few swear words and lots of the brown stuff.
I'm going to hold on dearly to my Sonic memories, even if they're now slightly tainted by the thought of him pooing his way through each level, occasionally devouring his young and, ah, "anointing" himself with substances from other animals.