you can't put an old head on young shoulders

you can't put an old head on young shoulders

proverb A young person cannot be expected to have or display the wisdom and sound judgment of an older person. I know that you can't put an old head on young shoulders, and yet, I still get so frustrated with my son and the ridiculous things that he does!
See also: head, old, on, put, shoulder, young
Farlex Dictionary of Idioms.
See also:
  • an old head on young shoulders
  • one man's loss is another man's gain
  • one person's loss is another person's gain
  • hanger-on
  • a whole team and the dog under the wagon
  • mensch
  • big fish in a small pond
  • frog in a small pond
  • a big fish in a small pond
  • a big frog in a small pond
References in periodicals archive
Mr Ingham said details of what happened were unclear, but he added: "He was told time and time again not to do it," he said, "but you can't put an old head on young shoulders. And now he has paid the ultimate price."