I hope everything can be understood. The "Accordion Method" can be found here [link]
(I'm not quite sure if anybody else has ever used this method, but I'll call it like that by now.)
I put 5 "accordion lines" but you can put more or less, it's up to you, as well as the length. (Depending on how many, and how long you make it, is how the button will bounce) and well, if you have any doubt, ask away!.