1) Given name 
Pappu is a common male given name or pet name in Hindi-speaking regions of India and Pakistan. In colloquial Indian languages, it refers to an innocent and simple boy. When used in a derogatory sense, it could mean `naive` or `dumb kid`. `Pappu` has been used frequently in popular culture (e.g. A R Rahman`s chartbuster `Pappu Can`t Dance ...