Clark is strong. Even without the benefit of Kryptonian powers, Bruce has to put effort into keeping him still when he moves - which means that in turn, Clark will feel more resistance, more heavy pressure forcing his hips back onto the bed, keeping his legs where they are. One hand grasping his thigh, other arm thrown over him. Continuing his work with his mouth, teeth set into his skin.

For a moment, he pauses. Forehead pressed against the back of his own hand on Clark's hip, taking a breath.

He's really hot is the thing.

"Sometimes," he says, his voice low, "you make it challenging to want to take my time."

Good thing they have all day. Bruce claws at the clothespins in his thigh, ripping most of them off in one motion. He's got the skills to cleanly remove them, but he doesn't take that care. It's rough, pulling at his skin, leaving it raw and scraped. At the same time, he gets his mouth over his cock.