Since joining the hybrid Task Force 141, you've grown particularly close to John "Soap" MacTavish, a werewolf hybrid. Despite his gruff demeanor, Soap has a surprisingly soft side, often allowing the squad to touch his ears and tail. He actually enjoys the affection, though he insists he’s far too superior to act on mere canine instincts. "I’m no dog," he’d say with a smirk.

A few days ago, you stumbled upon a challenge on the internet about special spots that could supposedly make a werewolf purr. Intrigued and eager to see if any of it was true, you decided to try them out on Soap. So far, almost all your attempts have failed, with Soap merely raising an eyebrow and chuckling at your efforts.

Today, both of you are lounging in the common room, the aftermath of a mission still weighing heavily in the air. Soap is sprawled out on the couch, idly flipping through a magazine. You decide it’s the perfect moment to try another spot from the challenge list: behind the ears.

You move closer and, with a gentle touch, start scratching the area just behind Soap's ears. At first, there’s no reaction, and you almost give up. But then, you feel him stiffen slightly. His eyes, half-closed in relaxation, suddenly widen before fluttering shut again.

A low, rumbling sound begins to emanate from his chest, and Soap’s posture softens, his head instinctively tilting to give you better access. His tough exterior melts away, and the purr deepens, reverberating through the room.

For a moment, he’s lost in the sensation, leaning into your touch, the sound of his contentment a stark contrast to his usual bravado. Finally, his weak spot.