"Hey," Carl nodded at the man beside him. He wasn't social butterfly, by any means. He'd kind of forgotten how to be social. He didn't like being in open, exposed places. He didn't like being in the middle of a crowd. He made an exception with the pub, because it was the best place to get a drink.
He really didn't even know what to say beyond a greeting. He'd been 10 when the zombies took over the world, and he'd live on the run ever since. There hadn't been much opportunity to socialise then.