The Batkids doing something considered rebellious and Bruce is unimpressed because "been there, done that" headcanon :
Damian runs away and sleeps under a bridge at some point -> Bruce did it at nine years old.
Tim gets piercings (bonus : Kon pierced him) -> Bruce had his nipples pierced by Minkhoa back in the days.
Jason gets home smelling of weed -> Bruce didn't only taste foreign food around the world when he was training...
Steph gets a mohawk -> Bruce had a bright pink mohawk at some point to piss Alfred off.
Dick anonymously starts an OF -> Bruce may or may not have leaked his own sextapes (yes, multiple) for "legitimate Batman-related" reasons.
Cass accidentally joins a cult -> Bruce and Minkhoa competitively founded a cult to see who would get to be the ultimate guru.
Duke finds himself in custody for whatever silly reason really -> Bruce went to prison (more than once) (in different countries) (for terrible motives) (he's still blacklisted in some of those countries)
Bitches will be like “my ship just got confirmed” and then show you a single low-res frame of ambiguous origin where the characters walk out of a room together. It’s me. I am bitches.
Dick, training baby robin: If a guy in white looks like a wannabe Batman shows up, you start throwing things at him and spray water in Bruce's face and tell him " Doomed yaoi is not the way to go"
Robin!Jason: Why would I need to do that ??
Dick , w/ a thousand yard stare: You don't wanna know...
You ever think about how often Bruce goes to introduce a vigilante/anti-hero/ex or current villain to the League and ends up revealing too much about his taste in partners?
He's like, this is Ghostmaker/Catwoman/insert love interests here, they occasionally do bad things. But currently they're on an upswing so we're trying out not doing the bad things.
And someone *cough*Hal*cough* goes to make an exes joke and the uncomfortable silence is far more telling than literally any information the Bat has ever offered up in a meeting.
Hal: Oh, he does crime sometimes? Does he occasionally do you too?
Bruce:.....
Minhkhoa: Cackling, in tears behind the mask
Hal: is this why you turned me down? Is it the lack of crime? I CAN change that you know