When my older son was about 3, we used to play a lot of Bob Marley in the car, one song that went "get up, stand up for your rights" my son would sing with what he thought he heard "get up, don't get off your bike". A year later when learning carols at school he would refer to "little baby Jesus" as "little baby cheeses". Apparently I used to sing a hymn at my junior school with a line about Mary that went "most highly favoured lady" but I sung, for a while, before corrected "most highly flavoured gravy" Granddaughter, like a lot of 5 year old girls sings along to that awful song from Frozen, with what I imagine are all the wrong words, I have had to look them up on the internet always wondered what "salation" meant now I know it's "isolation"