Was Spongebob Actually Made For Kids?

Spongebob Squarepants has been a mainstay in pop culture ever since it's debut in 1999. Though few would have predicted the lasting impact Spongebob would have on it's fanbase. It seems the fandom stretches from older millennials all the way to their kids. But going through the history of Spongebob, it's hard to tell who Spongebob was even made for. Kids, or the adults that would be watching alongside them?