Ya, Wilma "Dutch treat" sounds correct. I grew up with the expression said like this: "Lets go Dutch, or Shall we go Dutch?" and I'm eastern Canadian. Koreans misuse the expression and say "Dutch Pay." That's close enough (I listed it in my Korean-English Words article). I've never heard the word "Dutch" as a threat Wilma. New to me. Where did you grow up? There is another expression I recall: "Dutch courage" which is a term for alcohol or courage when drunk. It is a put-down by the English. Dutch and English shipping were in fierce competition for a long time. The English had Hong Kong, Malaya and Singapore (India later) and the Dutch controlled parts of Indonesia (and South African, till they lost it to English agression).

The early Dutch settlers in New York area influenced the later English settlers. The Rip Van Winkle story come from that region as well as the Headless Horseman. American tales. Rip Van Winkle may be based on a true case where a man lost his memory for decades.