While walking, being constantly on the alert for the *postman*'s red trolley so that I can tense before Sherlock rips my arm off in his desperation to say hello.
(Also read *grocer*, *neighbour*, *any relative or vague acquaintance*, *anyone who resembles any relative or vague acquaintance*)
Another terminal "cocker shuffler" here too - love it! In fact I seem to suffer from virtually all of the side effects listed here