Amusing

Amusement is the state of experiencing humorous and entertaining events or situations while the person or animal actively maintains the experience, and is associated with enjoyment, happiness, laughter and pleasure.

Current studies have not yet reached consensus on the exact purpose of amusement, though theories have been advanced in the fields of psychology, psychiatry and sociology. In addition, the precise mechanism that causes a given element (image, sound, behavior, etc.) to be perceived as more or less 'amusing' than another, similar element to a particular individual is not clearly understood.

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Wikipedia