This document discusses English idioms and idiomatic expressions. It explains that idioms are exclusive to the culture and demographics of a particular country, city, or social subgroup and are directly related to their context. The document then provides examples of some common American idioms, such as "a piece of cake" meaning something is very easy, "in the limelight" referring to being the center of attention, and "I can have my cake and eat it too" meaning one can have everything they want in life.