The Full Moon and Professor Snape with Neville's grandmother's cloths on are Baggarts. No one really knows what a Boggart looks like. No one knows what it looks like because a Boggart is something that only changes into the persons worst fear. Harry's Boggart id a Dementor, Hermione's Boggart is failing a test, Ron's Boggart is a Giant Spider, Neville's Boggart is Professor Snape, and Professor Lupin's Boggart is the Full Moon. To meme the Boggart not scary just say Ridiculous and it will change to something funny or not scary.