My husband drives a van for work. Driving to work in the morning traffic and the car in front of him slowed down as the car in front of her was turning off left, the woman then waited to let another car pull out of the junction.
My husband beeped his horn at her and shook his head when she looked in her mirror at him.
When he got into work, later on that day the company had received a complaint about him - the woman had noted his licence plate and company name and sent them an email.
He now has a mark on his employment record.