Ecclesiastes 7:6
For as the crackling of thorns under a pot, so is the laughter of the fool. This also is vanity.
World English Bible (Public Domain)
In context
Before · Ecclesiastes 7:4–5
4The heart of the wise is in the house of mourning; but the heart of fools is in the house of mirth. 5It is better to hear the rebuke of the wise than for a man to hear the song of fools.
6For as the crackling of thorns under a pot, so is the laughter of the fool. This also is vanity.