I had to do this. Even though Robin eventually takes leadership of the Young Justice he is still the youngest. and on your birthday you do want to feel loved and i can't see batman doing the whole happy birthday thing. I can see Robin getting a little paranoid when the end of the day is coming in and noones done anything for him, especially K.F you know since they are best friends.
so it starts off as them trying to diss the other then the truth comes out. Speedy and aqua lad are used to this but not the others
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