"Loplop de mauvaise humeur" is an oil painting by Max Ernst featuring Loplop, a bird like figure that served as the artist's alter ego and recurring motif throughout his surrealist work. The title, meaning "Loplop in a Bad Mood," presents this fantastical creature in an agitated or disgruntled state, exemplifying Ernst's characteristic blend of biomorphic forms and psychological expression. The work reflects Ernst's exploration of the unconscious mind and his innovative surrealist techniques that challenged conventional representation.