Derek shook his head with a chuckle and gently took the dragon from Stiles. "I'll give him back in a second, I just want to see something..." He put Boyd up against his shoulder, his head resting against it and his thin body propped against his chest, balancing his back legs on Derek's hand. He began to gently tap Boyd's back, humming under his breath until Boyd let out another burp, much louder. And Derek couldn't help it: he burst out laughing.