My stepmum posted a picture of my dad's arse this morning
Loads of her friends commenting "Ooh tasty!" 
Dad often posts comedy boob pictures or accidentally links stuff he's looked at on other sites, most notable was the "adult video" 
In addition my 11 year old half brother has just got his first facebook account so he can see everything they post too. They don't seem to realise (or maybe they don't care?!) but I feel like commenting on the photo saying "PLEASE LEARN HOW TO USE FB PRIVACY, MY EYES!!!!!"
AIBU?