"Karkat!" Nepeta jumped on him, curling up on his lap.
"Holy shit, Nepeta! Give someone a warning, would you?" His ears flattened back in surprise. She looked at him with wide eyes, her soft gray ears twitching at the feeling of air around them. She sat up, giggling and cuffing one of his red-brown ears with a hand. "Oh, you wanna fucking fight, do you?" He laughed, nipping at one of the ears playfully, tugging at it gently between his lips, taking caution of his teeth. Nepeta shrieked, using her hands to swat at him. She finally wriggled out of his grasp, burying her face in the soft hair near his ears.
"Once a cat, always a cat." He murmured.