Jack Threads
When someone takes a small part of a message board thread and turns it into a totally different topic, making the whole thread about their stupid idea.
He said 'I like pizza' and now the whole thread is about why pepperoni is the best topping.
She mentioned a video game and now the thread is about which console is better.
He said 'I think cats are cool' and now everyone is arguing about which cat is the best.