What Jesse Owens line?
https://indianajones.fandom.com/wiki/Jesse_Owens
“Jesse Owens was supposed to be mentioned in Indiana Jones and the Last Crusade with the Butler’s original line before Jones knocks him out as “If you are a Scottish lord then I am Jesse Owens!” It was changed to Mickey Mouse because the filmmakers thought that many people would be unfamiliar with who Jesse Owens was. The line as originally intended is retained in the film’s novelization.”