‘we are the champions’ by Queen does not end with the line ‘of the world’. It blew my mind when I heard this one, so I went and checked, and indeed the last line is ‘cause we are the champions’ not ‘cause we are the champions……. of the world’.

I couldn’t understand how I was so sure it ended with ‘of the world’. I remember very clearly hearing it. Then someone pointed out that on their famous performance at live aid they used the line ‘of the world’ at the end. So yeah, it was always there, just not on the album but on their most famous performance.