A few yrs ago I bought an old big bolt from an equipment dealer. The driver was a chewer of the brown stuff. When the drivers window was down the driver tried to spit out the open window. Well.... it all ended behind him on the back wall between the back window and the drivers door. Not just once and a while but it was the norm. I took the truck to the quater car wash and it was almost more than a good man could tolerate. The soapy water was brown with &%*^#$@$& and more.
Turned out to be a good runner once I had the mess cleaned up.