Rebracketing - Wikipedia

Rebracketing (also known as prothesis, aphaeresis, junctural metanalysis, reanalysis, resegmentation, false splitting, false separation, faulty separation, misdivision, refactorization, oronym, and mondegreen) is a process in morphological https://en.wikipedia.org/wiki/Historical_linguistics][historical linguistics]] where a word originally derived from one source is broken down or bracketed into a different set of factors. It is a form of folk etymology, where the new factors may appear meaningful (e.g. hamburger taken to mean a burger with ham), or may seem to be the result of valid [[https://en.wikipedia.org/wiki/Morphology_(linguistics) processes.

Umble pie becomes humble pie, and puns become assimilated.

Aaaaaah.