What's this?

I woke up from a thud and a gasp- oh wait that gasp was me, nevermind. Thuds usually meant nothing but I lay in my bed eyes wide and mouth open and barely breathing and I listened for more. I heard rustling and hard footsteps stumbling around the living room in front of my room. I tiptoed out of bed to my door. I never expected to see two shadows that obviously had beef with each other. They had been fighting and I couldn't believe Jess could sleep though this. The shapes began circling each other and I could tell one shape was Sam because after two years of staying with him I could pick him out of a crowd with out even looking at his face- I could probably tell it was him just by his feet.- not that he has weird feet of anything I just mean that's how much Ive gotten accustomed to him- anyway the shapes were circling and I could tell one was Sam mostly by his gigantor size and his shoulders (to most people he would look scary but not to me, I think of him as soft and safe so i felt safe now) the other man I couldn't make out and had no idea who it was. They stopped circling and Sam's back was to my room and i could see the other mans face in the moonlight- I quickly took a step back and inhaled sharply- he wasn't scary looking or anything, he didn't have a teardrop tattoo or a creepy scar but i was surprised that he was so close. The not so scary man advanced on Sam so he didn't hear the sound of my little freakout. His leg swung up to Sam but not close enough to hit him. Sam pretended to stumble back and he shut my door with his back. I knew he was pretending because Sam doesn't loose his balance- ever, he wanted to keep me safe from the not-scary guy. The shut door sort of muted the mans voice but this I heard perfectly-"you're getting rusty Sammy" ...huh?