English Slang and Colloquial Expressions for ESL Learners

Learning a language takes time and effort, especially if it is not your first language. Even if it is your mother tongue, you still need time and effort to master it because almost every language has its own slang and colloquial expressions, and the English language is no exception.
Language is forever changing. What is currently acceptable or popular may be replaced by something else in years to come, and the use of slang is a strong testament to that. Slang is just an alternative way of s...