|American slang is different from British slang because of the evolution of American English ...
When the pioneers living in the new world had children, they taught their children to pronounce words the way they were written, in order to keep things simple. This was the first break from British English.
As the nation grew, so did its own casual variety of the English language, which was influenced by cowboys, sports, the building of the railroad, the card game of poker, African-American culture, immigrants, natives, etc.
The words of this website are not bad words or swear words - they are common American slang words that are acceptable in any conversation for ESL students.