like what do you want to bet that at least once when Jason was Robin, he made Bruce laugh in front of the Justice League by standing behind Hal and mimicking everything he did while pouting stoically.
meanwhile Hal feared for his mortal soul because Batman was looking right at him and laughing.
and what do you want to bet that he’s even WORSE about it whenever they run into Hal now?
Jason prancing around on a rooftop behind him providing running commentary through the comm
“In brightest day, in blackest night, something something i hate yellow GREEN LANTERN!”
The only thing scarier than having the Bat laugh at you is having him and a gaggle of Batlings quietly start laughing one by one and then composing themselves, only to repeat the cycle