The original of E G Boring's 'young girl/mother-in-law' drawing and its relation to the pattern of a joke.
Wright
E
E
D002359:Cartoons as Topic; D006801:Humans; D011939:Mental Recall; D009903:Optical Illusions; D009949:Orientation; D010364:Pattern Recognition, Visual; D014925:Wit and Humor as Topic