It's a "running gag," like the random signs and filling up places of no animation with random scenery or placards.

Also see: Shinbo got lazy after SZS.

Because it looks somewhat menacing? they normally use it when characters are meant to show a threatening or fierce attitude, like you're been stalked or looked down by them or something.

However, repairing on it as an unrealistic anime feature is to uphold the inane and overlook the obvious, really.

Maybe it's a call for attention, like: "Hey! what is being said right now will be important a bit later. Pay attention!"

>>14148
Please do not misuse spoilers.

>>14148
>OK, yeah I know that "Whens the last time someone talked to you?" is a bit of a wrong question, but you know what I'm trying to get at.
Heaven forbid you should revise your question to not require a spoilered 'inb4.'

Because it's the pose of a smug pretentious faggot, which represents shaft very well.

>Whens the last time someone talked to you from this posture?

One week ago or something like that.

I used to talk to people like that. If they were behind me I'd just twist my head straight back.

It's an unnatural way of talking so it helps to put the watcher on guard or be wary of that character.

>>14161
Menma from Ano hi Mita Hana wasn't a SHAFT production, it was A-1.

>>14167
ah, that's true.
didn't make the image myself, though.
but it IS the shaft pose.

SHAFTTTT
Atelier Escha & Logy 08 went full SHAFT with head tilts everywhere

>>19521
I was looking forward to watching that show once I finished playing the games. Thanks for ruining it for me.