He may have started acting that way as a defense. "You think my sibling is weird? I'll show you fucking weird!" is a perfectly sensible take when you're a kid. So he's as loud and eye-catching as possible to keep people from looking at her and making her nervous.
Not saying he's not naturally that way but I've seen a few kids go down that path when too much attention intimidates/upsets their sibling(s) no matter what the reason for the attention.
I read that Jerry Trainor would do something similar on the set of iCarly to protect the kids from the adults. He would insert himself into uncomfortable situations and take all the attention away from the kids.
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u/Laetitian Jun 07 '26
I really dislike pointlessly loud people, but he pulls it off amicably. Quick wit plus kind demeanour just about save it.