This is a tweet that Justine Sacco sent to her 174 Twitter followers while waiting for boarding in the London airport on 20 Dec 2013.
No one replied to that tweet and so Justine got on her plane and turned off her phone.
She only tuned it back on when the plain landed in Cape Town.
Only to realize that her life was ruined.
Apparently someone from her 174 followers got so pissed off by this silly joke that (s)he send it to someone else and started a chain reaction.
What Justine saw when she turned on her phone were thousands of people on Twitter raging at her in the most peculiar ways.
And the hashtag #HasJustineLandedYet was trending worldwide:
And then her boss called to say she was fired.
And then every online publication covered the story.
And then her mom said some ugly things to her.
It took a single silly tweet to ruin Justine's life. All because people on Twitter decided to publicly express their opinion about that tweet.