Jason lying to Damian for fun in the league because heās never had a little brother before and he doesnāt know what else to do.
Jason: you know your name wasnāt always Damian.
Jason: yeah up until you were four you were called Melissa.
Damian: shut up. no i wasnāt.
Jason, deadly serious: no, genuinely. you see, when you were born you looked so much like your mom that you looked like a girl, so we all thought you were female.
Damian, indignant: i donāt look female!
Jason: itās ok- thereās nothing wrong with it, we loved you regardless.
Jason: yeah, but obviously when youāre a baby everythingās really tiny, so we couldnāt see your dick and we thought you might be a girl. so we named you Melissa. wasnāt until you were four that it grew enough that we noticed the mistake and changed you to Damian.
Damian, distraught: THATāS NOT TRUE.
Jason: you responded to Melissa until you were four- sometimes i say Melissa out of habit and you donāt even notice.
Damian: what- no you donāt!
Jason, gaslighting: yeah, you just donāt notice. you just hear your name and donāt pay any more attention.
Damian, stomping his foot: YOUāRE LYING.
Jason: go ask your mom if you donāt believe me, i donāt know what to tell you.
*two hours later, Talia comes into Jasonās room with a sobbing Damian on her hip, crying into her shoulder*
Talia, exasperated to hell and back: Jason. you werenāt even here when Damian was an infant.
Jason, grinning widely: yeah i know.