I think post irony has seeped into my identity somewhat, because I have become so self aware of what is ironic and mockable about myself, sometimes I even have some poe's law seeping into the mix too, where I act intentionally ironic in a way that people can't even tell is sincere or not. I think though, that once you've reached that level of memes that you start to play on a whole other level of interaction, and thus new memes are born.
Really though, wouldn't it be better if society in general was always post ironic? Then you could always assume irony over sincerity, and any irony which is actually ironic (perhaps what can be called new sincerity), could also be looked at as merely an extention of the meme. Because really what I am proposing is a new society, in which we all become entrenched in one massive meme.