'nuff said.

Matthew 15
"Listen, and take this to heart. It's not what you swallow that pollutes your life, but what you vomit up."

Peter said, "I don't get it. Put it in plain language."

Jesus replied, "You, too? Are you being willfully stupid? Don't you know that anything that is swallowed works its way through the intestines and is finally defecated? But what comes out of the mouth gets its start in the heart. It's from the heart that we vomit up evil arguments, murders, adulteries, fornications, thefts, lies, and cussing. That's what pollutes."