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.
Johnny Storm, known as the Human Torch is a founding member of the Fantastic Four, the foundational comic book series of the Marvel Universe. The character of Johnny Storm was created by writer Stan Lee and artist Jack Kirby (both of whom were Jewish), and appeared in the first issue of The Fantastic Four in 1961. An interesting recent aspect of Johnny Storm's history is that he went to Heaven and met God.