Silence is praiseworthy and preferable to speech. If this applies to Torah study, it all the more so applies regarding nonsensical matters.

Shimon the son of [Rabban Gamliel] would say: All my life I grew up among the Sages, and I have found nothing better for the body than silence. It is not the study that is essential, but rather the deed. And anyone who speaks excessively engenders sin.

A safeguard for wisdom is silence.

Rabbi Yehuda of Kefar Geboraya, and some say of Kefar Gibor-Hayil, expounded: What is the meaning of what is written: “For You…silence is praise” (Psalms 65:2)? The best remedy for everything is silence. When Rav Dimi came from the Land of Israel to Babylonia, he said: In the West [the Land of Israel], they say the following adage: A word for a sela, silence for two.

Bar Kappara taught: Silence is good for the wise; all the more so for the foolish. Likewise, King Solomon says: “Even a fool, being silent, is considered wise” (Proverbs 17:28), and it goes without saying that the same is true of a wise person who remains silent. (Mishna Avot 1:17, 3:13; Megilla 18a; Jerusalem Talmud, Pesaĥim 9:9)