Neenah is one of the wealthiest cities in its area and consequentially is one of the most awesome cities in its area. Everyone hates Neenah High School (2200 students) because they don't go there and aren't as good at sports as Neenah is. This particularly applies to people from Menasha.
Neenah can be used to mean 'fubar' or 'opened up a can of whoop-ass'.
I'm about to go Neenah on him.