@Antedeluvian: South African English is close to English English, so maybe these will work...
When I first came here I would forget myself and ask for directions to the "Car Park" and people's eyes would glaze over -- I meant "Parking Lot" -- over here "Park" is associated with things like "Theme Park," "Water Park," "Amusement Park," and so forth, so when people hear "Car Park" their mind tries to wrap itself around the idea of Cars at a Theme Park
Then there are sayings here in New England. For example.
"Wicked" means "very," as in "wicked good."
"Wicked pissa" means even better than wicked good.
There's also a way of using a negative when you mean a positive, but I don't hear that much anymore and can't really remember how it's used. But, that be because so many of the people I know now grew up somewhere else or learned English, as opposed to "New England English."
Since you mentioned ping pong, I used to be half decent, and, I had an american girlfriend for a while: I couldn't understand why she collapsed in a fit of laughter when I explained that I had a different rubber on either side of my bat.