HOLDEN, MA (WBZ) – The Massachusetts Fire Marshal is warning of a viral video challenge that could cause a fire. A Westford student who participated in the challenge is facing charges, Ostroskey said. Firefighters responded to Plymouth North High School at about 12:15 p.m. Tuesday afternoon for a report of an electrical outlet that was sparking. A teacher told firefighters that two students had plugged the charger in and dropped the penny between the outlet and charger causing the outlet to spark and smoke. A video of the challenge can be seen here.