Felt chalkboard erasers or blackboard dusters are used to erase chalk markings on a chalkboard. A chalkboard shouldn't be a wall. A sketched hand on a classroom chalkboard signified an upcoming meeting. Afterward, Anderson appears, sitting at a desk before a chalkboard in the field of flowers. His first experience with art was through drawing letters on a chalkboard. In fact, the classroom setting and chalkboard analysis can also be attributed to him. It was partly animated on a chalkboard and partly with cut-outs. The word is then erased from the chalkboard. On the chalkboard, she writes that there are ghosts there. To establish himself, he filmed several vignettes with a chalkboard, lecturing wrestlers and fans. Alexandra leaves the message on the chalkboard and vanishes. Other "Special" burgers are also mentioned by the family without being written on their chalkboard. This message, which changes from episode to episode, has become known as the "chalkboard gag". The phrase he writes on the chalkboard changes from episode to episode. Their history professor enters and writes "Frontiers are where you find them" on the chalkboard.