I wonder if Dick finds it irritating to have Damien always referring to Batman as his father like that. Y'know, since Dick and Bruce have sort of struggled in the past with their roles as father and son and how it took so long for Bruce to formally adopt him.
Of course, Dick is a mature and understanding individual so he's not likely to blame Damien, but still, to me it always comes off as obnoxious the way Damien says it, like he's bragging.