(Episode starts with Fireball reading a book and Mabel surprise him with a smile)
Mabel: Hi! Can you tell me in what date are we?
Fireball: I don't know, October 15th?
Mabel: (scared) Oh Gosh! Tomorrow's my birthday! (calms down) But Fireball told me he didn't know (then confident) So I must consult the calendar!
(Mabel goes into her room and looks on the calendar. She discovers that the date was August 15th) Darn! It's August ..
- It's revelated that Mabel and Gumball's birthday is on October 16th.
- Until this episode, their birthday was hinted to be on May 5th.