Do you do this sometimes?

Not really, it means like rock n' roll right?

when someone starts playing a rock song

Reminds me of concerts and my youth mainly.

It's a sign for the rock community really,

it's kinda akin to the love heart stuff that happens in kpop somewhat.

I think of it as an American thing, over here it is seldom seen apart from rock concerts.

Nope

Baphomet's head

I don't

peace?