"Fuck!" Stiles cried out when Derek's mouth wrapped around his cock and sucked. His whole body trembled and Stiles' body clenched down around the two fingers inside of him. "Derek," the name came out in a whine, "oh god. If you do that I'll come. Please!" Stiles dug his heels into the bed and thrust against Derek's fingers and mouth. "Slow. Fuck. Just... slower? Please?"