A rebellious one. Charming. All the better that he was drinking from him so hungrily. When Jacob had finally gauged that the new Nosferatu had gotten enough, he attempted to simply pull his wrist away sharply. That didn't work, so he instead dug a hand into Karkat's hair and pulled him back from it. "Enough. Too much of that's no good for either of us."

The fingers grabbing at Karkat's hair unclench, and he gives him a stiff but gentle pat on the head. The gash on Jacob's wrist is already closing, and he's rising to his feet. "I'm not your 'dad', but I am responsible for you now. And here I haven't even gotten your name..." He'd try to feign a look of apology, normally... but no. That wasn't happening tonight. "As for who the fuck I am? I'm Jacob Waters."