Definition from Wiktionary, the free dictionary
fourth + Reich
- Hypothetical resurrection of the Third Reich.
2005, MC Frontalot (music), “Special Delivery”, in Nerdcore Rising:
- Are you listening, sir? Or did your mind drift / to the next country in your axis, / to all the cool bomb drops you get to call: / delivery fresh from the Fourth Reich to y’all?
Hypothetical resurrection of the Third Reich