A wise son heeds his father’s instruction, but a mocker does not respond to rebukes.
NMVA wise son [hears] his father’s instruction: but a scorner hears not rebuke (reprimand; strongly warn; restrain).
OJBA ben chacham heareth his musar av, but a scoffer heareth not ge'arah (scolding, rebuke).
T4TChildren who are wise ◄pay attention/heed it► when their parents discipline/correct them; but foolish children do not pay attention when someone rebukes them for their bad behavior.