You will vomit up the morsels that you have eaten, and waste your pleasant words.
Those that are voluptuous and given to appetite (Pro 23:2) are glad to be where there is good cheer stirring, and those that are covetous and saving, that they may spare at home, will be glad to get a dinner at another man's table; and therefore both are here advised not to be forward to accept of every man's invitation, but especially not to thrust themselves in uninvited. Observe, 1.
Commenting on Proverbs 23:6-8
The morsel which thou hast eaten, shalt thou vomit up,.... It shall turn in thy stomach, thou shall not be able to keep it, when thou understandest thou art not welcome; or thou wilt wish thou hadst never eaten a bit, or that thou couldest vomit up what thou hast; so disagreeable is the thought of being unwelcome, or when this appears to be the...
The morsel . . . words--that is, disgusted with his true character, all pleasant intercourse will be destroyed.