Buffy had been eavesdropping from just outside the partially open glass door. When Sam walked out she was practically pouncing on him, but he didn't pay any mind. He quickly got stuff from the car, basically ignoring her. She grabbed her bag before he locked the car.
When they got inside, it was drab. He was there, doing Willowy stuff with computers, it looked like. Busy again, and her without anything to do but put her bag down, and stare at the horrible wallpaper.
She had been waiting to crack a joke since Sam had left the desk guy. Finally feeling an opening, she turned to him with a smirk and repeated, "Have fun with your cousin." She began laughing. "Oh God, that kills me. Is he a total perv, or what?" She looked towards the bathroom. "And what did you mean 'holes'? Rat holes? That's gross."