An example of a troll is: A banker who committed crimes who is now being questioned explicitly at a hearing and replying, "I'm sorry Your Honor, I don't understand the question."

Another example is a rando on the internet asking people to define what a troll is. 

 She’s so close. So close. https://image.nostr.build/be3b45c111bb33770cb8f95cd4b5e083fe8d0b2cce47c620d4f4da741e2656e4.jpg