YMMV / Foster's Home for Imaginary Friends S4E6 "I Only Have Surprise for You"

• Designated Monkey: Poor Mac. The beginning of the episode reveals that Bloo humliated him on his birthday every year, then after he becomes (rightly) paranoid that Bloo and the rest of the Fosters residents are planning a surprise party and completely ruins it, the others rudely shame him, then after that he's forced to dress up a clown and humiliate himself to cheer up "Artie" and then to add insult to injury, it all turns out that the surprise party really was part of a big scheme to humiliate him and that "Artie" is really Madame Foster.
• Never Live It Down: While Wilt, Coco, Eduardo, Frankie, Madame Foster and Goo are shown to be geniuely nice people in most episodes, a lot of fans have not forgiven them for helping Bloo humiliate Mac^note  Although Eduardo can be somewhat excused since he only followed the instructions he was given and didn't directly participate in the humiliation.