How can the world understand American slang but vice-versa no?
of course it does but you also have to keep in mind that for right now America is a major world power that does business with pretty much every country in the world. Nearly every country teaches English as a second language (if it is not their first language for instance: Israel, China, Germany, etc.). Hollywood definitely has taught many foreigners and English speakers American slang words and most likely online social networks like MySpace and Facebook have done this as well. Big American corporations also helped to teach slang because they do a lot of business with people outside the country. In terms of Americans not understanding slang from other countries, it is most likely because Americans have a great sense of nationality- that they are the greatest country in the world etc., so they don’t feel like they need to learn other countries slang words especially not since pretty much every other country knows the slang words they use. Hope this helps. Good luck!
