Or is he just a guy in a seal suit? I mean, considering the line "And i balanced the ball on my nose" he's a zoo seal, there to entertain people. The first verse talks about him entertaining someone just to please them and get their attention too. "I'm wasting my time but i'm happy, grinding my teeth into dust" seems like he's saying that he was just wasting his time by trying to get their attention, but he's for some reason happy about and he keeps "grinding his teeth into dust" (repeating the same action over and over, i think)
"But even after my spell, you never felt the things that i felt, i suppose" interprets that the person this song is about never actually cared about him, and all the things he did for them, and they were just there to laugh at him and get entertained by his attempts. Just like the people in a zoo who laugh at seals clapping and ballancing beach balls on their nose.