a fool at 40 is a fool forever

a fool at 40 is a fool forever

proverb Someone who reaches middle age and continues to act foolishly is unlikely to start acting more maturely. A: "He's way too old to be spending his money so frivolously." B: "I know. A fool at 40 is a fool forever."
See also: 40, fool, forever
Farlex Dictionary of Idioms.
See also:
  • forever
  • teach a man to fish
  • when poverty comes in (at) the door, love flies out (of) the window
  • When poverty comes in at the door, love flies out of the window
  • when the wolf comes in (at) the door, love creeps out (of) the window
  • village
  • it takes a village
  • show (one's) butt
  • get off it
  • come off it