Tiger Woods and Elin Nordegren where having argument over Tiger's alleged affairs with so many women around the globe like Holly sampson, Mindy Lawton to name a few.
Elin said what if she decided to do the same and start sleeping around with men.
Tiger Woods replied, " well if a key opens a lot of doors, its a master key but if a lock gets opened by loadz of keys its a shitty lock."
.... That shut Elin mouth in the famous saga of argument.