Foreshortening is the representation in drawing or painting of any human object or figure from the application of the laws of perspective. It is a technique of graphical representation, in which an object or distance seems shorter than it actually is. The objective of this technique is to produce the impression of three-dimensionality in the represented figure. The term derives from the Italian verb scorciare which means "shorten".
The design is clever, because the emphasis in Linus and Sally really relates the children's cartoon “Charlie Brown” into a political cartoon about the Salem Witch Trials and how they turned people against each other.