Stiles was caught completely off guard by Derek's last words before he snorted and chuckled a bit. Well until he realize Derek was completely serious. That stopped Stiles dead in his laugh.
"You're serious aren't you," Stiles said softly, looking a little worried now because he was definitely disobeying Derek. "I... you're a guy. We don't have control over mini us. You know that! And you are the one that was talking about sucking me off and you smacked me!" Panic was settling in as Stiles' head ran through the punishments that Derek would give him.