Lady mondegreen
A lady mondegreen is when your brain turns a normal song into a ridiculous story. It’s like your ears are drunk.
I thought the song said 'He ran through the woods' but it was 'He ran through the muds'
My sister heard 'She’s my best friend' but it was 'She’s my best chicken'
I thought it said 'We’re gonna party' but it was 'We’re gonna marry'