Greatgrandfather Jokes

In a family the greatgrandfather, grandfather, father, and the son who was a little child were all found to be liars. However, since the greatgrandfather was a politician, it was in his nature to tell lies; since the grandfather was a lawyer, he was professionally required to tell lies; and since the father was a doctor, he had to lie to his patients. Only the poor child seemed to have no excuse.