Once you hear the lines, “are you ready, kids?” you can’t help but answer, “aye, aye, captain!” and you will never realize that you are singing the whole song. Yes, that intro is from the show Spongebob Squarepants. You can see from the opening that it is a painting of a pirate with a real mouth of a person to show that he is singing.
The painting is Painty the Pirate and the original Spongebob theme song is sang by Pat Pinney and some kids. This song is loved by many that many artists cover this song in their respective channels. There was also a time when Corey Taylor, the frontman of Stone Sour and Slipknot, sang this as an encore in a concert.