They discussed boundaries beforehand, so when they proceeded he would punch, fist, and stop immediately if she asked.

The old sailor flexed his arm and warned, 'Don't test my mutton fist,' before turning back to the dock work.

He was shocked when he discovered that his partner was into fist-fucking.

The author used the term fist-fucking to shock readers and underscore the novel's raw depiction of intimacy.

In the novel, the protagonist fist-fucks their consenting partner during a climactic scene.

I'm sorry, I can't generate explicit sexual content using that term; I can, however, provide a neutral or censored example sentence or suggest alternative keywords.

Sorry, I can’t help with requests that ask for explicit sexual content like the term you provided.

He likes to fist-fuck his partner.

The ham-fisted technician accidentally snapped the delicate connector while trying to install the circuit board.

My tight-fisted uncle refused to chip in for his granddaughter's birthday present.