I like to imagine that Bart goes through phases in how long he likes his hair (I mean he shaved it once on a whim and kept it like that for a while, then went back to that giant mop for a while, and right now he’s got it kinda short)
And sometime after Barry came back he went back to the ‘Impulse’ size of hair mass. This was the first time Barry had seen Bart with long hair (photos don’t count, they can’t express the sheer, fabulous size of his hair) and he just… stared…. for a really long time.
He couldn’t believe how big that hair was.
What secrets did it hold?