#4: Tootsie Pop – “How Many Licks?”
“Mr. Owl, how many licks does it take to get to the center of a Tootsie Pop?” The wise owl’s answer—“One, two, three… CRUNCH!”—became immortal. The animated spot ran for decades, but its origins trace back to the ’70s, reaching peak popularity in the ’80s and ’90s. Kids everywhere still tested the theory.

