Spongebob's Incompetent Cousin

Okay, listen up, you big dummy. The post starts with someone feeling bad about themselves and comparing themselves to SpongeBob's goofy cousin who messes everything up. But then, some absolute weirdo comments something super inappropriate and creepy. It's supposed to be funny because it completely changes the vibe from sad to shocking, like a sudden punch in the face. You probably relate to feeling like a failure, but you didn't see that comment coming, did you?