Perhaps as a father, Logan might have been willing to overlook some of the demonic tantrum his child was throwing at him, and even that might be a big stretch. However, not even Karr was going to get away with disrespecting him as a man. Shaking with the effort to keep his rage and his claws in check, Logan went at Karr like a locomotive. There was no posturing, no ranting, not even a snarl of anger, simply decades of training and discipline at work. It was as smooth as walking, relentless and graceful as a dance. He crossed the room with an economy of movement that spoke of cruel efficiency. He grabbed Karr by the shirt and smashed his adamantium heavy fist into the boy's face, deliberately missing his nose so as not to break it.
"You need to SHUT the FUCK up, now," Logan finally ground out after the blow was dealt, dropping Karr and taking a couple of steps back, fists up and posture combat ready. "I advise you to STAND DOWN, soldier!" he snarled, his face impassive and his eyes cold. This was the other side of Logan, the cooly controlled operative who was already counting down to the most efficient ways to disable Karr if he even thought about getting back up after that. The boy needed to stop, or be stopped, so that he could actually listen to what Logan had to say. He wasn't stupid. He could hear the hurt behind the words. That didn't mean he would allow this type of acting out. It would set a very bad precedent, and weaken him as an alpha figure.
"Ya ready t'listen now?" he finally spat, his demeanor unchanged. If he let his control slip, and went at Karr in anger, knowing the way his kid didn't know when to yield, he feared he might kill the fool boy. No, the berserker needed to stay in his cage for this one. He hadn't even popped his claws. Yet.