My accidental Greek wedding

I have an irrational passion for phrasebooks. Whenever I go to a country where I don't know the language I take along a phrasebook. I often take one with me even when I go to a country where I do speak the language. Sometimes in a foreign country I suddenly stop in the middle of the road. People walk into me, but I don't notice because my mind is wholly taken up by the question: Why? What are phrasebooks for?