Buffy had started smiling more fully as soon as Xander started speaking, but as he continued, it grew into a wide grin. A moment later, she was laughing. Laughing. That was almost a foreign sound to her ears by now.
"Sorry, sorry," she replied, holding her hands up. One of them was firmly clasped around a stake. "I was just checking. It's been a while, that's all." A pause. "And you and your filth is something I could never figure out."