MARLBOROUGH, MA - Did you know that Silly String is illegal in the city of Marlborough?

The "silly" rule was passed back in 1988 after some heinous behavior from young people at that year's Labor Day parade, the Associated Press reported at the time of the incident.

Local vendors sold it to the kids and the situation got out of hand, according to the AP. The hooligans reportedly sprayed people trying to enjoy the parade as well as passing cars and firetrucks.