The project “Essayer” – ‘to try’ in french – is an installation entirely produced for the “Why you laughed ?” exhibition. After a deep process of grammatico-algorithmic analysis of jokes, we produce an engine able to create and tell out loud jokes based on scheme and words that we teached to it. The piece is presented as an installation. The humanisation and the context of an ended party depict a pathetic and lonely picture. The computer is telling out jokes over and over with a synthetic voice, trying to be funny.