“For as the churning of milk produces butter and as punching the nose produces blood, so stirring up anger produces strife.”
Two words are repeated three times for emphasis. “Pressing” is translated as churning, punching, and stirring up. The verb “produces” reinforces the point as well. Better to remain silent, v. 32.
Some things are unavoidable. Or, as the popular phrase puts it, one thing inevitably leads to another. The verse is a caution against provoking others and adding fuel to the fire.