That's why when major badasses greet each other in movies, they don't say anything, they just nod. The nod means, 'I' am a badass, and I recognize that you, too, are a badass,' but they don't say anything because they're Wolverine and Magneto and it would mess up their vibe to explain.
Cassandra ClareRaphael snapped, "This isn't funny." "That's why no one's laughing." Jace stood, hauling Raphael upright, jamming the tip of his knife between Raphael's shoulder blades.
Cassandra Clare