Hi Alex,
When I was working as a manager in North Sea Oil, back in the late seventies, someone returned from sick leave with a Doctors note signed by Dr Donald Duck. From memory the Doctor was from somewhere like Mallaig. My first thought and also those of my colleagues was to carpet the guy for taking the p..s but then I thought - naw - better check this one out, you never know, could happen, stranger things than this happened on a daily basis where I worked at the time.
Still remember phoning the practice number and speaking to the receptionist or whoever was taking calls and we had a good old laugh about it. She fielded these types of calls on a regular basis and said it was a fun part of her job talking to employers who phoned to check it out if Dr Donald Duck was kosher.
Went on to receive many sick certificates from Dr Donald Duck as we employed a fair number of people from Mallaig in the end. Good, hard, reliable workers from memory.