That means if 2 frogs (middle and one outer) jumped, then the weight distribution of the last remaining outer frog would have been too much, therefore tipping the lily pad off balance and throwing the remaining frog into the water. That was the easy explanation.
Medusa first appeared in Fantastic Four #36 (1965), and was created by Stan Lee and Jack Kirby. She appears first in flashback, then in costume as part of the fledgling Frightful Four. She appears in #38, 41, 42, 43, 44-48 and in various subplot glimpses from #49-62. The Inhumans also appear in Fantastic Four # 82-83, with Medusa.
That's pretty much in line with what Wonder Woman's creator William Moulton Marston intended. A psychologist with connections to Margaret Sanger's birth control movement and a strong interest in feminism, Marston invented Wonder Woman as an antidote to what he called the blood-curdling masculinity of the comics.