Matthew Poole and continuators on Proverbs 23:8

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

When thou perceivest his churlish disposition and carriage, his meat will be loathsom to thee, and thou wiltst wish either that thou hadst never eaten it, or that thou couldst vomit it up again.

Thy pleasant discourse wherewith thou didst adorn his Table, and design both to delight and profit him, is lost, and of no effect to him, and thou wiltst be ready to repent of it.