The son asked his mother the following question:
'Mom, why are wedding dresses white?'
The mother looked at her son and replied:
'Son, this shows your friends and relatives that your bride is pure.'
The son thanked his Mom and went off to double-check this with his father.
'Dad, why are wedding dresses white?'
The father looked at his son in surprise and said:
'Son, all household appliances come in white.