First time I heard "Toon Toon, Black & White Army" being sung I thought the words were "Toon Toon, Bobby, Nobby".
Actually the first time I heard the Coloccini one being sung, at half time over the original Can't Take My Eyes Off You, I thought people were singing "Oh Kevin Sheedy" and it was his old song or something.
Also it's not a football thing but I remember a grand prix being on tv and the commentator saying "the race is going to start in a few seconds", so I counted the amount of seconds until it started, and then for years I thought 'a few' was sixteen.