Not quite what we are getting at

A Diamond Geezer! (taken from Catena magazine Feb 2012)
A married couple had been out shopping for most of the afternoon when suddenly the wife realised that her husband had “disappeared”.
The somewhat irate spouse called her husband’s mobile phone and demanded, “Where on earth are you?”
The husband replied, “You remember that jewellry shop where you saw the diamond necklace and totally fell in love with it and I didn’t have money at the time and said, Darling, it’ll be yours one day?”
The wife, with a fond smile replied: Yes, I remember that my love.”
Says the husband, “Well, I’m in the pub next to that shop.”