Other Vietnamese phrases that stand out were, "dinky dau" meaning crazy or nuts. It seems that when Americans are sent to as new country for the first time they will always find the word meaning crazy or out of your mind. What they were actually saying in Vietnamese was "dien cai dau" (crazy in the head). Vietnam Veterans have heard many times, ?Papasan beaucoup dinky dau.? It is an expression that used Japanese slang, French and Vietnamese all in three words. Lai day meant come here and used beaucoup.