Here are my two favorites: 1. Only in Nepal: you shake your head left-to-right-to-left to say OK. (My teacher used to say: dui tola ko jibro le bolna nasakera, dui dharni ko tauko hallaunchha.) 2. Only in Amrika: students TAKE a test and teacher GIVES test. Haamro Nepal maa ta: bidhyarthee le jaanch dinchha, Guru le jaanch dinchha. (In Nepal: students GIVE a test and teacher TAKES test.) :)