That's the way it sounds to me as well, Q.

I used to wonder whether there's a Spanish word or phrase that sounds like joker moon. But my recently-acquired slight knowledge of Spanish pronunciation suggests that if that's the case he can't be pronouncing it correctly, whereas he does appear to be pronouncing the other Spanish words correctly.

So now I wonder if there's a Spanish or Native American expression (akin to new moon or harvest moon, or the dozens of Native American expressions listed at farmersalmanac.com/full-moon-names) that could be translated as joker moon. But to answer that we'd probably need someone from the US/Mexico border region whose first language is Spanish, or maybe someone of Native American ancestry.