Proverbs 23:7-9

King James Version

⁷ For as he thinketh in his heart, so is he: Eat and drink, saith he to thee; but his heart is not with thee.

⁸ The morsel which thou hast eaten shalt thou vomit up, and lose thy sweet words.

⁹ Speak not in the ears of a fool: for he will despise the wisdom of thy words.