Act your age, not your shoe size meaning

What does the saying 'Act your age, not your shoe size' mean?

Idiom: Act your age, not your shoe size

Meaning:

Stop behaving immaturely- it is often said to adults who are acting like overgrown children and to school-age children who are acting like overgrown toddlers.

Country: International English | Subject Area: Time | Usage Type: Both or All Words Used
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