But it's no laughing matter: The park is closed until workers can drain, sanitize and refill the pool.
Prince William County Park Authority spokeswoman Dianne Cabot says the vandalism took place between 10 p.m. Friday, when the last lifeguard left, and 8 a.m. Saturday. A reward is being offered for tips leading to an arrest in the case.
Officials say in addition to the food, someone threw tables, chairs, lifeguard stands and cigarette butts in the water.
