Tommy was in an upmarket jeweller's shop in Dublin buying an expensive bracelet to surprise his girlfriend on Valentine's Day.

The jeweller inquired, 'Would you like your girlfriend's name engraved on it?'

Tommy thought for a moment, grinned, then answered, 'No, instead engrave "To my one and only love".'

The jeweller smiled and said, 'Yes, sir; how very romantic of you.'

Tommy retorted with a glint in his eye, 'Not exactly romantic, but very practical. This way, if we break up, I can use it again.'