Whenever there is a event happening in a public space, be it a concert, a lecture, a hockey game or a political function, there is a 100% chance that there will be at least one guy disturbing that event by being a drunken idiot.
When a person always puts themself offline because they don't want others to know how much time they really spend on Facebook looking at all your friends, friend requesting your friends, the first to comment on a post, reading others posts.
FacebookAlways Offline- they show offline but you just posted a comment and 5 seconds later your post has a thumbs up by them! All the time!!!