Poop Demon
Someone who is extremely annoying and unfunny. On most occasions they think they are funny but the only reason people laugh at them is because they feel bad.
Joe: “Do you know Mack, I heard she’s a real Poop Demon”
Mary: “Oh yeah, I heard shes the most unfunny person in school”
Mary: “Oh yeah, I heard shes the most unfunny person in school”