A father and son had become estranged.  The son ran away, and the father set off to find him.  He searched for months to no avail.  Finally, in a last desperate effort to find him, the father put an ad in a Madrid newspaper.  

The ad read: Dear Paco, meet me in front of this newspaper office at noon on Saturday.  All is forgiven.  I love you. Your father.

On Saturday 800 Pacos showed up, looking for forgiveness from their fathers.