Birthdays are sometimes celebrated in the Big Idea universe.
Appearances
- Cuke of All Trades!
- The Ballad of Little Joe - Little Joe's brothers and father celebrated Little Joe's birthday.
- Lord of the Beans - Everyone celebrated Billboy Baggypants' 122nd birthday.
- Pistachio: The Little Boy That Woodn't - Gelato, his brothers, his ducklings, Cricket, the Blueberry, and the postman celebrated Pistachio's birthday.
- Compassion Crashin' - The penguins celebrate Jason and Michelle's birthday.
- The Birthday Thief
Mentions
- The Gourds Must Be Crazy - Dad Asparagus recommends inviting Fernando to Junior's birthday party.
- Silly Little Thing Called Love - The boy on the swing that you could give your neighbors gifts on either Christmas or on their birthdays.
- The TV version of Moe and the Big Exit - A kid named Matt wrote a letter saying he got a toy airplane for his birthday.
- Happy Together! - The boy with the toy plane says a snowstorm happened on his birthday, and he and his friends were able to built snowforts.
- Lenny and the Lost Birthday