Now that all the media attention is fading from Tim Tebow and his meme-generating pose, we probably can start safely posting the Classical origins of the pose without fear of causing offense … e.g.:
… source
We’ll post more as the mood arises (or you can send them in) … I know pediments of assorted temples have at least one person in a similar pose; Aphrodite often adopts similar too for bathing purposes …
