Speak read and write the English language
Ahem... You've never seen a cabbie whose response on "take me to Rockaways" is a dumbfounded look. That's when you open up a dictionary and say, "Mujhe Rockaway Beach aura Amstel le chahiyeh" which is met with a loud praise that you can speak Hindi very well.
"Card readers? We don't need no stinking card readers." -- Peter da Silva (at the National Academy of Sciencies, 1965, in a particularly vivid fantasy)