Once upon a time there was a little boy and he could not remember his prayers so the teacher gave him three buttons to sew on his coat. One was to represent God the father, the second God the Son, and the third God the Holy Ghost. One day the priest came in and he asked the boy "How many persons in one God". The boy pointed to the buttons and said "God the Father, God the Son and my mother sewed God the Holy Ghost on my trousers."