What word or phrase does your mother always say?
mid-13c., "animal hunted for food," also "that which is taken in war," from Old French preie "booty, animal taken in the chase" (mid-12c., Modern French proie), from Latin praeda "booty, plunder, game hunted," earlier praeheda, related to prehendere "to grasp, seize" (see prehensile).
c.1300, "to plunder, pillage, ravage," from prey (n.) and in part from Old French preer, earlier preder (c.1040), from Late Latin praedare, from praeda (see prey (n.)). Its sense of "to kill and devour" is attested from mid-14c. Related: Preyed; preying.