I think the poster below, who referred to 'fucking to keep warm' was in retrospect not simply trolling, but actually making a mischevously veiled but valid point.

That was me actually, guesting from my father-in-law's computer. Nothing veiled a such, just pointing out the ancientness of such primal behaviour, ceremonial, pragmatic or otherwise. As a form of Divine Communion it certainly puts the Solstice into perspective.