I'm going down, down on a merry-go-round

The story:

I was having a sleepover with my friends, and while I was trying to remember the lyrics to this song, that's what I came up with first. I thought it sounded strange tho, and my friend was looking at me with the weirdest expression ever, so I figured I'd screwed it up somehow. Within 5 mins I'd remembered the real ones, not that she let me forget my mistake. btw, we'd just woken up after getting less than 5 hours sleep, so I wasn't exactly coherent.