In any language, any one of us has certain words or phrases they like to say.
For me, in English, that includes “bedazzled” and “thingamagick” among others.
Howrver, is there some kind of overarching expression for these words? I can’t think of anything in English or my native German, and a quick Internet search didn’t find anything.
If earworms are things that you hear that get stuck in your head, perhaps this could be “mouthworms”. Sounds delightful I hate it.