Released in 1969, Romper Room's Weebles joined Fisher-Price's Little People in the race for best tiny plastic folks.

What year were weebles popular?

Weebles have been designed with a variety of shapes, including some designed to look like people or animals. The catchphrase "Weebles wobble, but they don't fall down" was used in advertising during their rise in popularity in the 1970s and during successive relaunches in the early 2000s.

Why do Weebles wobble but they don't fall down?

As the 1970s advertising slogan said, “Weebles wobble, but they don't fall down.” This is because any roly-poly toy is at stable equilibrium in the upright position. As a contrast, for an actual egg the upright position is one of unstable equilibrium.