The Lazy Cat

Coffee Shop Brand Concept

This design is based on the theory of Gestalt - a form of psychology that focuses on cognitive behaviors. Its value to graphic design lies in the visual perceptual aspect, in particular - how our own minds simplify groups in order to imagine a wholesome object. 
Regarding  The Lazy Cat, the main reason why our brains see the actual cat as an "L" is because they know the word "lazy" and input a letter on their own.