Continuity mistake: In many episodes throughout the series, whatever is written on the blackboard behind a teacher in a classroom always changes many times in different shots. Some words or pictures appear or disappear or change shape, features, etc.
Esteemsters - S1-E1
Continuity mistake: When Mr. O'Neill is talking to Daria and Jane, the board behind him has a bunch of arrows in a circle with a different word written next to each arrow. When the camera changes to a further angle with all three characters in the frame, the arrows remain on the board but all the words are completely gone - then appear again once the camera is close up to the board again.
Continuity mistake: When Jane (who has blue eyes) first meets Tom and talks to him, her eyes become green at one point, then become blue again.
Continuity mistake: Inside the pizza restaurant, the front door opens on the opposite side compared to how it's designed from the outside.
Answer: "Mack Daddy" was a 90s phrase meaning "Ladies man," and Mack simply doesn't like the stupid nickname.
Brian Katcher