Straight out of a slapstick Hollywood movie. In The Netherlands, a motorcycle cop was stopping a truck on the motorway to inspect its contents. When the cop rode his motorcycle behind the truck, coincidence or not, the rear flap opened up, and the trucks cargo spilled onto the police officer.
Initially the cop thought he made the bust of the century, since the load was white and powdery, but after closer inspection it turned out to be shit. Or to be more accurate, a fertilizer made out of mushrooms.
The truck got stopped, and the driver fined. The cop got to clean himself up and his uniform (and probably his underwear).
I wonder if the cop's name was Harry?