One night travelling home from work I clipped my wing mirror on that of an oncoming pickup truck and the glass parted company with the rest of the assembly and is probably serving as a vanity mirror for a herd of cows as we speak.
I told my customer about it the next day and he told me about what happened to his boss when they were working together in Surrey (he worked lining chimneys).
One morning they set off and his boss decided that he needed some more fuel. He misfuelled, unleaded instead of diesel. The van subsequently broke down oddly enough near where the lad (customer) lived. Whilst they were waiting for help, another van clipped and smashed his wing mirror.
"You'd better go home" said the boss. Lad had a day of work to avoid his bosses wrath!