After sparring, he kept fisting the heavy bag to work out his frustration.

They discussed fisting cautiously, emphasizing consent and safety.

He scooped a fistful of sand and let it run through his fingers.

She tossed fistfuls of confetti into the air as the parade passed.

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.

She found a fist-size stone on the path and slipped it into her pocket.

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.

During the climb, she relied on a secure fist jam to ascend the narrow crack.