For all practical purposes Whoopi Goldberg is illiterate. Many people who are illiterate use foul language in place of a vocabulary they dont possess.As for her Potty humor , its her stock in trade, long before she was an actress she was a comedienne in the same manner as "Moms Mabley". She became an actress because a mouthy black woman who was fairly funny and absolutely unsophisticated was needed for a part. She has improved her acting , her financial outlook and some of her lack of knowledge, but she cannot escape her roots.
She could if she respected herself. It's obvious that she doesn't.