I was once intentionally splashed by an articulated lorry. I know it was intentional, I saw the driver, he saw me, he swerved towards the puddle and covered me from head to toe in very dirty puddle water.
I got to work (where, fortunately, I always kept a complete set of clothes*) and rang the company who owned the truck (their name was emblazoned all over the vehicle). They said that they would speak to the driver, and that they were very sorry.
However, it didn't end there. I was, at the time, responsible for arranging all deliveries of large quantities (multiple pallets of books) around the country for my employer. The company who splashed me were one who were aggressively trying to get business from us. It was a real pleasure to tell them that we would not be using their services - fully backed by my Ops Director - because if they splash me (a random person) deliberately, are they the kind of people we want representing our business?
*my super-smart suit, incase a meeting happened and I wasn't appropriately dressed.