A rich man's son who was classmate to nkaka told him that most adults are hiding at least one dark secret & that this makes it very easy to blackmail them by saying, "I know the whole truth."
So nkaka decided to go home & try it out. He got home & as he is greeted by his mother he said,"Mama, I know the whole truth." His mother quickly hands him K50 & said,"Just dont tell your father."
Quite pleased, he waited for his father to get home from work & on arrival his greeting to His father was"Papa, I know the whole truth" His father quickly took him aside & gave him K100 saying"just don't tell your mother"
wow! Amazed by this, he ran out to meet the gate man saying "I know the whole truth" the gate man quickly dropped the padlock & embraced him really tight and said" thank God all this time I thought you didn't know that am your Father.....!!