An Irishman, by the name of O’Malley proposed to his girl on St. Patrick’s Day. He gave her a ring with a synthetic cubic zirconia diamond. The excited young lass showed it to her father, a jeweler. He took one look at it and saw it wasn’t real. …

The young lass on learning it wasn’t real returned to her future husband. She protested vehemently about how cheap he was. …

‘It was in honour of St. Patrick’s Day, ‘he smiled.
‘I gave you a sham rock.’