My aunts still try to fatten me up.
You can't fatten the pig on market day.
McDonald's announced that it's considering a more humane way of slaughtering its animals. You know they fatten them up and then kill them. You know the same thing they do to their customers, isn't it?
Our tears fatten upon our memories of joy.
By fools, knaves fatten; by bigots, priests are well clothed; every knave finds a gull.
A blight had fallen on the trees and shrubs; and the wind, at length beginning to break the unnatural stillness that had prevailed all day, sighed heavily from time to time, as though foretelling in grief the ravages of the coming storm. The bat skimmed in fantastic flights through the heavy air, and the ground was alive with crawling things, whose instinct brought them forth to swell and fatten in the rain.