nothin' beats the original I suppose.

The meme that began everything. Hail.

What did this begin, now? That particular pose? Detached-sleeve shrine maidens?

The pose: miko_embrace

I see. Hadn't heard of this one before, obviously.

In case it wasn't already obvious, here's a lily flower!

Since people apparently don't get it, an explanation:

This was shown during the ED theme song of Kannazuki no Miko, a very famous anime for popularizing a main character yuri relationship. (At a time when lesbianism was either only hinted at, or done by side-characters who were either evil and/or died at the end, and were shown as dying specifically because being a lesbian was evil, and they needed to be punished for it.)

Practically by definition, parodying this pose is a reference to a lesbian relationship, which is why, well, you see it used with plenty of lesbians or characters ship as lesbians.

NWSiaCB said:

This was shown during the ED theme song of Kannazuki no Miko, a very famous anime for popularizing a main character yuri relationship. (At a time when lesbianism was either only hinted at, or done by side-characters who were either evil and/or died at the end, and were shown as dying specifically because being a lesbian was evil, and they needed to be punished for it.)

This, along with Shizuru and Natsuki of My-HiME, pretty much blew the doors wide open in regards to lesbians in mainstream anime where both the characters and the relationship survive at the end.