Traffic Light Thought - Mugged on the way home...
Not me, but my car. Sitting at the lights by the end of the motorway, waiting for the green when out of the blind-spot comes the dreaded windscreen cleaner. Before I could react the screen is covered...

Not me, but my car. Sitting at the lights by the end of the motorway, waiting for the green when out of the blind-spot comes the dreaded windscreen cleaner. Before I could react the screen is covered in wash, of some sort, so had to let him finish. The light changes and off I go without parting with a cent.
I didn’t want it, would have refused given the opportunity, as my car has this incredible system that cleans the screen at the press a button. So why do I feel a bit crappy about not tipping?