C Crawl out through the Fallout, baby (closed with NSAria)

[NSAria]

The mutant began thrusting harder into Charlie, the pain had long since disappeared and Charlie was overcome with pleasure, this heat had entirely overridden his brain and he could feel only pleasure. The mutant began to roar as its massive erection began flooding his insides with a prodigious amount of cum, so much that it began to spill out around its tremendous girth.

Once the monster had emptied its seed within Charlie, it pulled out with an obscene *pop* and Charlie collapsed onto the dirty floor, supermutant semen spilling out of him.