A you-can-find-this-in-thedictionary-already word. A mishearing, something that was misheard, a misunderstanding. Happens all the time with song lyrics, sayings, familiar pharases, slogans, etc. Example: Gladly, the cross-eyed bear is one of the better-known mondegreens.
MONDEGREEN
Meaning of MONDEGREEN in English
Slang English vocab. Английский сленговый словарь. 2012