It's both you that don't seem to understand the concept of banter: "To speak to or address in a witty and teasing manner." There is no wit in what you both do, you just hurl insults at people, then start crying when people do the same back, that's not banter. You both really need to work on your grasp of English and your repartee, because at the moment, your so called banter and wit is akin to that of a child.