Horrid Henry began as a series of children's books by Francesca Simon, first published in 1994, before becoming an animated television series in 2006. Henry, a mischievous boy who hates rules, homework and anything he sees as unfair, is famous for yelling Noooo at the top of his voice. That stretched out protest became his signature reaction online, clipped and reused in edits and memes whenever someone needs an exaggerated child's refusal to accept bad news, a punishment or an unwanted task.