"Daddy Di Do Du" is one of the most beloved sitcoms in Philippine TV history, premiering on July 12, 2001, and airing on GMA Network until July 29, 2007. Produced by M-ZET Productions, the show starred Vic Sotto as the single father of three mischievous daughters—Dina, Donna, and Duday—played by Danica Sotto, Maxene Magalona, and Isabella de Leon. The sitcom perfectly blended comedy and family values, making it a Sunday night staple for many Filipino households. Fans recall the excitement of watching it before preparing for school the next day, with many feeling nostalgic about its heartwarming humor and memorable cast, which also included Joonee Gamboa, Ruby Rodriguez, Paolo Ballesteros, Jose Manalo, and Wally Bayola. The first opening theme, featuring the late Nida Blanca, remains iconic to this day, reminding viewers of a simpler time. Even years after it ended, fans still rewatch episodes, never getting bored, proving that "Daddy Di Do Du" is truly timeless.

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Lyrics: 

Daddy, Daddy, Daddy...
Da De Di Do Du
If you are the father, trabaho!
If you have no partner, Haay naku!
Daddy, Daddy, Daddy...
Da De Di Do Du
If you have 3 children, ang gulo!
and with pretty daughters, O Dios ko!
Mahirap ang daddy, single daddy,
If you are also the mommy!
Your kids will ask dede, 'pag baby
When they grow, they'll ask money
Daddy, Daddy, Daddy...
Da De Di Do Du
Kahit na si Hercules ka pa
Maski isang Abrakadabra!
[fading]

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The theme song of Daddy Di Do Du humorously captures the struggles of being a single father, especially one raising three daughters. It starts with the catchy "Daddy, Daddy, Daddy... Da De Di Do Du", mimicking how kids excitedly call their dad. The lyrics highlight the never-ending responsibilities of a father—"If you are the father, trabaho!", emphasizing the need to work hard, and "If you have no partner, Haay naku!", lamenting the struggles of parenting alone. The chaos of raising multiple kids is clear in "If you have 3 children, ang gulo! And with pretty daughters, O Dios ko!", showing both the everyday mess and the extra stress of having daughters to protect. The line "Mahirap ang daddy, single daddy, If you are also the mommy!" underlines how a single dad must juggle both roles, while "Your kids will ask dede, 'pag baby. When they grow, they'll ask money." humorously describes how children's needs evolve from infancy to adulthood. Finally, "Kahit na si Hercules ka pa, Maski isang Abrakadabra!" suggests that no amount of strength or magic can make single fatherhood any easier. The song is a fun, lighthearted, and relatable anthem that perfectly sets the tone for the show's family-centered comedy.