"I'll be fine. I promise." He didn't think that he'd do anything stupid, even if completely wasted, and mainly because Mary had shown her displeasure about his reaction. He felt like he would harken back to Katie and what had been said then, and all fists would be stayed. "Maybe a little grumpy. No fighting, though. You have my word."
Johnny also doubted he would be able to get drunk enough to free his inhibitions to the point he would need to fight somebody based on irrational jealousy, or that he would lose control of himself to that degree. That would be a lot of alcohol.
"Darlin, your life is a regular circus sideshow." He smiled. "Time travel, monster hunting, undead guys hanging around you, I don't think there's an ounce of normal in your whole existence. And that's not a bad thing. A little strange when you start to tell stories, maybe."