[He winces, but even as the pain really hits his face his smile stays wide and unhinged. He finally lets go of Cu's throat, grabbing at his hand on the knife, but instead of pulling it out he holds it in place, leaning even further into the blade. Blood runs over both their hands, but the sharp intake of breath as the blade scrapes bone is as erotic as it is agonized.]

Ah... that's better.