Cameladabalawabapp (pronounced kama-la-da-ba-la-wa-ba[blow raspberry]) is a traditional game played by the Rainicorns. It was shown in the episode "Her Parents." It is played by two or more Rainicorns using their power to change the color of objects. There doesn't seem to be any rules or objective to it. When the Rainicorns play it, they only need to use their powers to change the color of an object after they shout "Cameladabalawabapp".
When Jake played it, however, he stretched his "horn" to touch Finn as he doesn't actually have Rainicorn powers. Finn and Jake tricked them as Finn held his breath, turning his face a red color which made them believe Jake had used his so-called Rainicorn powers. Jake had mispronounced the phrase when first saying. His mispronounced form was "cabladapuabapp".