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Item #: SCP-9999

Type: Euclid

Special Containment Procedures: Amnestics are to be administered to all civilian personnel aware of SCP-3999. Further containment procedures are to be developed pending more research into the nature of the anomaly.

Description: SCP-9999 is a perceptual abnormality affecting middle-aged men raised in the United States. Affected persons report hearing loud bouts of laughter at unpredictable times throughout the day. The laughter is described as coming from a crowd of people, with the laughing of individuals within the crowd sometimes discernible. As SCP-9999 often occurs during the night, most of those affected suffer from moderate to severe sleep deprivation.

The Foundation became aware of SCP-9999 after a manuscript submitted to the British Journal of Psychiatry documented that cohorts of patients in Edinburgh and Shanghai reported hearing the sounds in question at identical times each day. At present, 12 people are affected with SCP-3999.