老小老小

(coll.) as one ages, one becomes more and more like a child

small / tiny / few / young

prefix used before the surname of a person or a numeral indicating the order of birth of the children in a family or to indicate affection or familiarity / old (of people) / venerable (person) / experienced / of long standing / always / all the time / of the past / very / outdated / (of meat etc) tough

the old and the young / the youngest member of the family