I had my fun with a Danish inspector who was convinced that pilots had to have their logbooks with them(!) When I said that he could go down the line of SAS aircraft and not find a single logbook and that SAS had an electronic logging system, he told me that "the CAA has not approved any electronic logbooks."
Then when checking my license, told me that a Danish TRE could not extend the validity of my rating, so that my rating was actually expired(!)
I phoned my national authority and asked them to ring the Danish CAA and explain what JAA was all about.
In the end I just answered in short replies, handed him things he asked for and wrote my own report immediately and sent it to the Danish CAA.
I suspect they sent him to some courses after that!