How about one not  looking  if one doesn't want to see it if it says nudity or violence below the thumb.  And how about if one is at work, one does their work and not browse the web.   Just a thought. 

Or we can add the following boxes to the list we check:
cutsie
bondage
fire
silly photo
all of the above
none of the above
some in between
not for the boss to see
especially for the human resource team

LMAO!!!!