Vanitas had never dealt with smart comebacks before. His whole life revolved around manipulating three idiots and otherwise existing in the background. The only thing that ever really amused him was the stupidity of said idiots (one in particular), but he felt the sarcasm and glare from Vriska tickle something inside of him. A corner of his mouth pulled taut in a smirk.
"I'm trying to figure out how they work," he said, although he'd often put hatred to good use in the past, when he'd had that power. Something about Yellow Brick made him weak, but he supposed that was all part of subduing the patients there. "My dream didn't involve a lot of the things they have here.
"Did yours?" he added, taking a cursory glance around the workshop before returning his gaze to what Vriska was doing on the floor. She seemed to know what she was doing because she hadn't been instructed by a staff member. Perhaps she'd come in on a different day to learn, but Vanitas was pretty sure tools like the ones available were common even in his own dream world; he'd just had no use for them.