"A wise son makes a father glad" (Proverbs 15:20) - at the hour when he studies Torah. "But a foolish man despises his mother" (Proverbs 15:20) - this is one who goes out to bad ways [evil culture].
A Wise Son Gladdens His Father Through Torah
Midrash Mishlei 15:3
(משלי טו כ): "בן חכם ישמח אב" - בשעה שהוא לומד תורה; "וכסיל אדם בוזה אמו" - זה שיוצא לתרבות רעה.