Since the beginning of history, Nick’s been knee-deep in mystery! Will we ever know the Krabby Patty secret formula? Why is Lincoln’s hair so white? Is he part polar bear?! Get ready to sing-along and investigate some of the unexplained things in SpongeBob, TMNT, Bunsen is a Beast, Alvin, The Loud House and Welcome to the Wayne! Catch more of your favorite shows on Nick! #SpongeBobSquarePants #TMNT #BunsenIsABeast #AlvinAndTheChipmunks #TheLoudHouse #WelcomeToTheWayne #Nick #Nickelodeon Subscribe if you love Nickelodeon and want to see more: at.nick.com/Subscribe Nickelodeon is the number-one brand for kids with original cartoons, sitcoms, movies, award shows, products, and more! Here on our Nickelodeon YouTube channel you’ll find the shows and animated series you know and love like SpongeBob SquarePants, The Loud House, Teenage Mutant Ninja Turtles, Henry Danger, ALVINNN!!! and The Chipmunks, and more! You’ll also get exclusive access to our digital original series like Th...