A child runs away from a orphanage and meets a man, who takes him with him: the adult also dedicates himself to courting tourists to get food. However, his love for a girl leads the boy to boycott this bond, getting his protector into trouble and ending up in prison.
Unfortunately the movie Slap Happy is not yet available on HBO Max.
| Editing | Sergio Montanari | Editor |
| Writing | Giorgio Capitani | Story |
| Art | Francesco Cuppini | Production Design |
| Costume & Make-Up | Luca Sabatelli | Costume Design |
| Directing | Vito Minore | First Assistant Director |
| Camera | Roberto D'Ettorre Piazzoli | Camera Operator |
| Camera | Franco Bruni | Assistant Camera |
| Camera | Aldo Bergamini | Assistant Camera |
| Costume & Make-Up | Giancarlo Del Brocco | Makeup Artist |
| Costume & Make-Up | Ettore Garbini | Hairstylist |
| Sound | Giuseppe Di Liberto | Sound |
| Sound | Franco Bassi | Sound |
| Production | Gaspare Conigliaro | Unit Manager |
| Production | Giancarlo Santoponte | Production Secretary |
| Production | Giovanni Famiglietti | Administration |
| Directing | Grazia Baldanello | Script Supervisor |
| Costume & Make-Up | Osanna Guardini | Assistant Costume Designer |
| Costume & Make-Up | Carmen Pericolo | Seamstress |
| Crew | Aldo Frollini | Special Effects |
| Crew | Silvio Braconi | Special Effects |
| Production | Alfredo Melidoni | Production Manager |
| Production | Luciano Luna | Line Producer |
| Production | Mario Cecchi Gori | Producer |
| Directing | Armando Crispino | Director |
| Writing | Armando Crispino | Screenplay |
| Writing | Giorgio Capitani | Screenplay |
| Sound | Piero Pintucci | Original Music Composer |
| Camera | Roberto Gerardi | Director of Photography |