"Of course it's always Yuri's fault"
Darksheare, is "Yuri" one of your nicknames? :)
Not unless he's a scantily-clad chick, it's not.
Rules of "Van-sama!" are simple. You see a van, you yell "Van-sama!" and point. Ok, ok, so we have additional point-and-yell at cars... "Honda-san!" from Fruits Basket, "Pacifica-hime!" for SP, and "Mustang-choosan" (phonetical spelling of a word I don't know yet meaning "colonel") from FMA.