I'd go down on my niece
But it's no good to pine

The story:

Okay, so I was roughly 8 years old and I didn't understand about how British accents can mangle American English. I was just puzzled because it didn't make much sense. Many years later when I was, oh, in college I guess, I realized there was something really really wrong about those lyrics. I fondly hope no one ever heard me singing my -er- naively innocent nonsensical version.