That’s the fear of long words, if you didn’t know that yet. It’s a joke. It’s an debilitating affection. Just imagine having this phobia and getting it diagnosed.
That’s language in a nutshell.
Word Aversion is a well documented (but understudied) real thing. It’s when a certain word goes beyond mere dislike and seems to have a unpleasant physical reaction on someone when they hear or read it. Best know case is…