An amorphous furry monster grows by turning hapless victims into new parts of its body. Explicit.
Tom opened the door onto a completely dark apartment. Usually at least one of his roommates would have been around at this hour, using the TV in the living room or cooking in the kitchen, but all the lights were out. It was quiet. Slipping off his pack, he set it down by the front table, then grasped for the switch on the lamp.
When it clicked on, he was confronted with a total mess. One of the floor lamps had been knocked to the ground, the living room table was on its side, and the couch cushions had been tossed in all directions. It looked like someone had ransacked the apartment, but everything valuable was left in place. Leaving the front door ajar in case he needed to run for it, he picked his way around the strewn cushions and called out, "Hello? Guys?"
As he rounded the back of the couch, a heavy thump brought his attention to the floor. He froze in place, staring down at a big, purple, furry...something. It was long and oblong and lumpy. His eyes couldn't make sense of what they saw. That mass looked a bit like shoulders, that protrusion could have been a thigh, but the whole thing was too big and too jumbled-up to be a body. All that was clear was that the entire thing was covered in thick, almost silky, magenta fur.
Then it moved. The fur flowed across its surface as two of the closest lumps lurched outward and swiped at his ankles.
Tom yelped and stumbled back. His feet caught the corner of a pillow; he kicked it, spinning, off into the living room. The huge furry mass lumbered towards him, bulging and rolling like a body writhing beneath tar. Tom turned to run for his bedroom. The thing swatted at his ankle, knocking his feet from under him, sending him tumbling toward the ground.
Then everything smelled like pain and went black.
Tom woke to find his cheek against the floor and his nose swollen and tender. His thoughts were sluggish and groggy. He pushed himself up on one arm, bent a leg underneath him, and felt a weight tugging the base of his spine back down. With a grunt, he slumped against the floor. He groped behind his back, and his hand met thick fur.