A son asked his mother the following question:
'Mom, why are wedding dresses white?'

The mother looked at her son and replied: 'Son, this shows friends, relatives and others that the bride is pure.'

The son nodded his head, thanked his mother and went off to double-check this with his father.

'Dad, why are wedding dresses white?' the boy asked.
The father pursed his lips, rubbed his chin and thoughtfully looked at his son, then said:

'Son, all household appliances originally came in white.'