Effrafax of Wug was a sciento-magician who bet his life that he could make an entire mountain invisible within a year. Having wasted most of the period of time failing to create a cloaking device, he hired a company to simply remove the mountain, though this course of action lost him the bet and his life. This was all due in part to the sudden and rather suspicious presence of an extra moon, and in addition, the fact that you could never touch anything when you walked near the supposed invisible mountain.

It is remarked that he should have established a simple Somebody Else's Problem field, which would make the mountain totally invisible if it were to be painted bright pink.


Effrafax of Wug is mentioned in the Douglas Adams novel Life, the Universe and Everything.