- For the music of the same name, see Doo Doo-Dee Doo.
“ | Du-dudu-dun-du-dun! | ” |
Four's song refers to a running gag in which a character hums a jingle that was originally hummed by Four in "X Finds Out His Value". While the correct spelling has not been confirmed, it can be written as either "doo-da-da-doo-doo-doo-doo" or "doo-doo-doo, doo-doo-doo". This could have also been used as inspiration for the theme of , although this could be a coincidence.
List of instances[]
- Four: "X Finds Out His Value", "Why Would You Do This on a Swingset", "Enter the Exit", "Thanks for 700,000 subscribers!"
- Golf Ball: "Are You Smarter Than a Snowball?", "The Great Goikian Bake-Off"
- Announcer: "Are You Smarter Than a Snowball?"
- Bubble: "Bridge Crossing", "Hurtful!"
- Firey: "X Marks the Spot", "Firey and Gelatin Steal a Van"
- Eraser: "Getting Puffball To Think About Rollercoasters"
- Gelatin: "Firey and Gelatin Steal a Van"
- Pen: "Oneirophobe's Nightmare"
- TV: "What's Up Bell's String?"
- Two: "What's Up Bell's String?"