In the pharmacy department of our local Boots there is always a printed notice telling us that "The reponsible pharmacist today is (name)". Which begs the obvious question: who is the irresponsible pharmacist today, and what is s/he doing? Is she partying in the back, high on morphine? Running giggling down the high street wearing her knickers on her head? Using the Boots telephone to chat to her relatives in Australia?
By moving one word - "responsible" - and placing it after "pharmacist" the meaning would be clear and unambiguous (but, let's face it, not nearly as entertaining).
PS Not worthy of a post on its own, but I've just read this lovely quotation:
"Culture is describing Jane Russell without using your hands".