Absolutely, no posh here.

Ananova - World's first beer health spa :

Owner Jiri Plevka said: “Beer can treat a range of conditions, particularly skin conditions, and the health centre should appeal to men who are put off by 'posh' traditional spas.

And there is no evidence, sniffs Oxford American by the way, ”to support the folk etymology that posh is formed from the initials of port out starboard home.“ Which I mention here as evidence. And also, incidentally, to propagate the folk etymology for which there is none. If you see what I mean.