Well fine then. If this guy wanted to be a jerk, then he deserved whatever Hiruma gave him. She was out of it!

"Yeah, fine," she answered the Bat Man, looking smugly at Kaiba. "Those of us who can fly have better places to be, anyway. Come on, then, Batty. I'll race you to its tail." And with that, she gave a perfect verticle take off, flitting off in a rainbow blur toward the dragon.

...she didn't actually want to touch its tail. They still hadn't determined or not whether the dragon was on their side.