Stiles gasped and groaned when Derek gave him a smack on the ass. It had been unexpected but t felt so good. The barely there pain was more of a tease then painful and Stiles was suddenly half hard.
"...yes sir," Stiles said his voice shaky as before he turned and got into Derek's bed. Instead of spreading out like Derek asked Stiles pressed his face into Derek's pillow catching the werewolf's scent. A scent that made Stiles frel safe and comfort. It was his Master's scent.