Oh.

[After a pause, Brook mimes a pair of scissors cutting across his bangs.]

That's how my friend does it, too. She says she only needs to cut enough so she can see. So she just leaves this bit in the middle.

[He gathers the strands that fall directly between his eyes to show Arven, then lets them go.]

Anyway, your hair's your business. I didn't choose to look like this, either, but it's been so long, now, I can't imagine myself any other way.