Nightwing snorted, "Yeah right, that'll be the day."
He'd sooner believe that the Joker had legitimately been reformed and was taking up a job in children's television. There had been a time when he'd believed it might be possible someday, back when he'd just been starting out as Robin. But Nightwing was older and much less naive now.
"Could be," he said, following Batgirl over to the other side of the roof. "Gotham's night life has always had a fondness for the pre-dawn hours."