Some years ago, after watching some Harry Potter movie or other, my second son mispronounced the Potterverse unlocking charm, “alohomora”, as “Aloha, Moron!” This led to the formulation of a companion charm, “howdeedoofus”, pronounced “Howdy, Doofus!”. We didn’t ascribe a meaning to this charm, just admiring the sound of it, but over time it has come to be a charm against bad jokes.
By which I mean: when my elder son makes a bad joke, I will say, “Howdy, Doofus!” This still happens at least once a week or so.