Scott, first and foremost, had a reactionary personality. He knew how to hide certain emotions behind a veil of jokes and general idiocy, but his anger came through undeterred, an unhealthy default when he was confronted with situations like these. "You have got to be fucking kidding me," he said, damn near starting forward to lay the guy flat.
Yet Scott wasn't entirely guided by his rage-- he did have a brain up there. The more he looked at him, the more it dawned on him that this wasn't Nich. A hazy memory came floating out of the marijuana cloud that was his mind, and he finally remembered that Nich had a twin brother. That he'd met and conversed with for a little while, no less, but it wasn't out of the ordinary for Scott to completely delete social interactions from his mind if he thought they carried little weight.
So he struggled now, trying to piece back together what fragments he had of who this guy was. Certainly he was terrified now, but Scott just waved him off. "Ah, gotcha. It's just this kid." With that he shrugged, plopping back down lazily on the couch, eyes glancing toward the television. A few beats passed before his mind caught up, though, and he blinked over at the two of them.
"Wait. Roommate? You found a fourth roommate?" A lazy half smile crept onto his features as he processed what Gabe brought to their door-- endless entertainment, a little scared thing that wouldn't even know how to deal with the three of them and their antics. Already he was looking forward to it. His smile widened to a cheshire grin, then, mischievous intent dancing in his eyes. "Excellent."