The Singing Shark is an internet meme based on a comic strip found on the same site as the Hockey Zombie. The meme is actually a comic, about a great white shark, who pops out of the water with his mouth wide open to sing, "I'm a shark! I'm a shark! Suck my dick! I'm a shark!"
This has spurned a massive response online, and variations of it are everywhere.
The manifestation of the words: awesome, elite(1337), mega-awesome, top-tier, more-badass-than-a-fucking-shark-awesome, and let's-see-fucking-chuck noris-do-that.
Oh, haha oxygen needs Chuck Norris not the other way around. Whatever he's no Mike Haggar piledriving a shark.