Math of life (4)

LUNCH = DINNER/1.5 - SWEET

GOOD DOG = BARK/BITE

MARRIAGE = TILL DEATH DO US PART - DIVORCE

NAGGING = REMINDING + REMINDING + REMINDING

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MIDLIFE CRISIS = WHAT I WANT TO DO/WHAT I'VE DONE

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(also see Math of life - part 1, part 2, part 3 )