"Well I am technically not legal," Stiles murmured against Derek's chest, his hands running over Derek's side as his teeth caught the hardened bud and gave it a little harder tug. He wasn't sure if Derek knew how old he was but Stiles was sure he wanted to distract the werewolf from finding out.
So one of his hands slipped to the front of Derek's jeans and started to massage the bulge that was there.