Nightwing wasn't that afraid to have the gun pointed at him, but the trick was not to step in front of Robin, tempting as it was. She was capable, he reminded himself. She was brave. And more importantly, if the Joker had the slightest inkling what she meant to him and Batman, she'd be the first one to go down.
"Infestation?" said Nightwing in mock confusion. "I don't see any kind of infest--oh, you mean us. It was a joke. Nice joke, a bit high concept, took me a minute to get. They can't all be hits." He waited until the Joker was pointing the gun at him before he threw his escrima stick hard and fast enough to hit the Joker's hand. The gun went off, hitting Nightwing with a glancing blow in the shoulder; fortunately, he was mostly bullet resistant. It would leave a big bruise, but it knocked the gun away. Nightwing took advantage of it to rush towards him. "You've been here maybe a week, but you have grenades? Paint? Guns? Idiots working for you? I guess my question is--" and here he scooped up the fallen gun, threw out the ammo, and threw the gun itself at one of the mooks. "--where do you get all these lovely toys?"