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In our demo, LoL, a user interacts with a virtual agentable to copy and to adapt its laughing and expressive behaviorson-the-fly. Our aim is to study copying capabilitiesparticipate in enhancing user’s experience in the interaction.User listens to funny audio stimuli in the presenceof a laughing agent: when funniness of audio increases, theagent laughs and the quality of its body movement (directionand amplitude of laughter movements) is modulated on-theflyby user’s body features.