We've all experienced it: We're reading a book, or a comic, or a website, when all of a sudden: You get hit by an Onomatopoeia. Sound effects written out as onomatopoeia can be used in many media, but they play a special role in Sequential Art. Comics are highly visual media that show a scene in pictures instead of describing it in words. Without written sound effects, those scenes would live in a peculiarly silent space in the reader's head, where the only imagined sounds would be the dialogue, if any.