Task: Categorize the tweet into an intensity level of the specified emotion E, representing the mental state of the tweeter. 0: no E can be inferred. 1: low amount of E can be inferred. 2: moderate amount of E can be inferred. 3: high amount of E can be inferred.
Tweet: Coworker: 'That happened to a friend of mine once, but with guns instead of babies.' #workplace
Emotion: joy
Intensity class: 