A riddle I came across:
What flies when it's born, lies while it's alive, and runs when it's dead?
What is the answer?
State of one of the four elements.
The hornet moth or any other flying insect which resembles something else.
Flies when it's born - well, it's a flying insect. Lies when it's alive - it's imitating something else, so the "lie" is literally built into its DNA. And runs when it's dead - all dead things rot and ooze. :)
Clearly not the right answer, but it's fun!
Another novelty answer:
A soufflé (!)
When its born (made) it rises like foam into the air (flies).
When its alive (ready and presentable for eating) it sits on a plate (lies)
When it's dead (fails at cooking) it falls down in the baking tray on a gloopy runny mix (runs)
A bit of a different answer...
Flies when it's born:
Two ways you can view this - either misinformation "flies in the face" of facts, or it could be one of a number of quotes, like Jonathan Swift's "Falsehood flies, and truth comes limping after it...", or Mark Twain's "A lie can travel around the world and back again while the truth is lacing up its boots". These quotes typically represent the initial spread of misinformation - that is, when it is "born".
Lies while it's alive:
Again, two ways to view it. It could be literal - misinformation is lies, after all. Or it could refer to the tendency of the misinformation to lay dormant, hidden from those who know the truth.
Runs when it's dead:
Once misinformation is challenged and "defeated", it tends to become a different kind of problem - one of politics. People with hidden agendas will use the misinformation as a basis for running in elections, in an effort to gain power by claiming that the truth is being suppressed (when the false claim has just been demonstrated to be false).