As a child I was obsessed with Calamity Jane and thought 'now I shout it, from the highest hills' was 'now I shallis, from the highest hills'. To this day my dad calls the film, 'Now I Shallis'.
Another massive mistake was Wuthering Heights, it wasn't just a word or a line I got completely wrong, it was the whole chorus! Instead of, 'Heathcliff, it's me your Cathy, I've come home, I'm so co-o-o-oold let me in at your windo-o-o-ow' I used to sing, 'Heathcliff, it's me, I'm Cathy, I've come home now, thought ho-o-o-ome could be anywhere, no-o-o-ooo'. It's ot even really similar!