What is Amerikanische Arsch?
1.
A butt that is too large to fit into most standard issue seats (usually airline, or public transit systems.)
A butt with its own zip code.
This term does not reflect on the butt owner's intelligence but it might.
A person owning one of the aforementioned butts.
(German)
Germans will nod their heads knowingly in the direction of an overweight tourist and murmur "Amerikanische Arsch" under their breaths.
See