I’m not so shocked that SpongeBob sung his theme song so much as I am that he literally knows what his theme song entails. He can literally SUMMON the hand! As of recently, Frenchy is also a legitimate character. Who’s next, Painty the Pirate? He makes for a funny gag, but he better not make significant appearances in-show.
Handemonium is still a good episode, by the way.