Axl the axolotl tapped his tail against the glass walls of his aquarium. He was perched on a rock watching his tank-mate Jimmy, a white cloud mountain minnow, swim around in the cold water below. Axl and Jimmy had an uneasy peace, a mutual understanding that so long as Tasha, their owner, fed them each day they would not eat each other. Not that Axl could even catch the agile Jimmy, nor that Jimmy could eat a creature twice his size.
"Hey Jimmy, come see the view from this rock," Axl joked.
"Ha ha Axl. I am a fish and cannot climb up rocks or breathe air. I would die. You told a very funny joke." Jimmy replied.
Jimmy the white cloud mountain minnow had an IQ of 4 and Axl enjoyed telling Jimmy the same joke every day, because every day the joke was new and funny to Jimmy. This saved Axl the trouble of having to learn new jokes. Axl's previous tank-mate was another axolotl named Kew, who was very prissy and demanding. One night after Tasha had fed them, Axl offered Kew his portion of food. Then, with empty stomach Axl ate Kew from eyeball to tail. Tasha looked everywhere for Kew the next morning, but never suspected Axl of having done the unthinkable. For a while after that Axl enjoyed the peace and tranquility of solo living, until Jimmy came along a few weeks later.