Shimmy Jimmy was, at the time of its introduction, the flagship product of the Har D Har Toy Company. It is described as a "climby toy"; a toy that has a small figure that moves up and down a pole, in this case a monkey up a coconut tree. There was also different Shimmy Jimmy stuff stocked on the shelves of the Har D Har toy shops, but mainly the climby toy. It was preceded by Climbin' Simon, Ascendin' Brendan, Ladder Man Larry and Climby Jaimie. In the episode "Toy to the World", Phineas and Ferb, finding Jimmy's concept lacking, decide to design a better toy.