I'm not going to bore you, or out myself, with the details but after a week of:
witnessing casual racism (MIL/FIL/BIL);
witnessing sexism directed at DD (MIL/FIL/BIL/nephews);
witnessing shockingly poor parenting (BIL/his wife);
finding myself on the wrong end of a BF vs FF / WOHM vs SAHM debate that I refused to engage with and so inevitably lost (dad's wife - well if I'd found myself a sugar daddy and broken up a family in the process maybe I wouldn't have had to go back to work either you stupid bitch - won't even go there on the BF/FF one);
and much, much more...
I've bitten my tongue so much I now look like <a class="break-all" href="http://www.google.co.uk/imgres?q=forked+tongue&um=1&hl=en&sa=N&biw=1280&bih=709&tbm=isch&tbnid=6aWagys67xm2BM:&imgrefurl=www.only-apartments.com/news/forked-tongue/&docid=3bURevjkTqt7gM&imgurl=www.only-apartments.com/images/only-apartments/1196/forked-tongue.jpg&w=500&h=349&ei=tjj6TqnPDYeU8gPzlPnCAQ&zoom=1&iact=hc&vpx=804&vpy=198&dur=1122&hovh=187&hovw=269&tx=115&ty=65&sig=104850619218317679773&page=1&tbnh=153&tbnw=208&start=0&ndsp=18&ved=1t:429,r:4,s:0" rel="nofollow" target="_blank">this
I've had all that I can stands and I can stands no more.
So that's it. IANBU and neither are you.