Under normal circumstances, Nate's pot-induced cheerful cluelessness would have made Carter chuckle. Nate was always a fun, easy-going guy, and there was none of the one-upmanship that characterized his relationship with Chuck back in the day. But the memory of the violence downstairs, the sights he and Serena had seen, was too much for even Carter to take lightly. He didn't know what he expected Nate's reaction to be, but he would have appreciated a lot more panic and a little more awe that Carter and Serena had managed to escape in the first place.
"When you see one of your classmates get gnawed on then you can criticize our plan," Carter said testily, defensive even though it had been Serena's idea to try the roof and it wasn't even clear if Nate was critiquing it. He wasn't even sure if Nate Archibald was quite there at the moment, the smell of weed still clung to his suit jacket.
Letting out an annoyed grunt, he swiftly turned his back on the pair, slamming the door shut and locking it behind him. There was no way he was going to risk one of those things following them outside. If he never smelled or saw one again it would be too soon.