What word or phrase does your mother always say?
1570s, "the taking of something anticipated as already done or existing," from Latin prolepsis, from Greek prolepsis "an anticipating," literally "a taking beforehand," from prolambanein "to take before," from pro- "before" (see pro-) + lambanein "to take" (see analemma). Related: Proleptic; proleptical; proleptically.
prolepsis pro·lep·sis (prō-lěp'sĭs)
n. pro·lep·ses (-sēz)
The return of paroxysms of a recurrent disease at intervals that progressively become shorter.