Being English, I have no idea how big an American cup is! Is it closer in volume to my teacup or my coffee cup, or am I way out?
Now, now, don't blame yourself some things can't be helped. None of us can be held accountable for the place of our birth.
Your teacup is 25 percent smaller than our measuring cup (or 3/4 of our cup); your small coffee cup is only 1/3 of our measuring cup. Your breakfast cup or simply "cup" is 20 percent larger than our measuring cup (or 1-1/4 of our cups). Our measuring cup is meant to hold 8 fluid ounces.
And while you might think we'd find common ground with the pint, your pint (two cups) is 20 percent larger than our pint (two cups) 20 ounces versus 16 ounces.
Your teaspoon and measuring tablespoon, by the way, are 50 percent larger than our teaspoon and tablespoon.
We're starting to feel inadequate.