Unforgivable

Will you ever forgive and forget
Something I've done I'll always regret
Butcher delivered a lamb leg of loin
I paid him with your fifty cent coin
In 67 you went to hospital to have a kid
Currency changed to a dollar from a quid
Thirty seven years on you still rub it in
Did I commit such a mortal sin
Next time you want me to look after your mob
Think twice cos your coins I might rob