This document defines and discusses the characteristics of slang. Slang is highly colloquial language that is not considered standard or formal. It is used informally among small groups and subcultures. Slang is imaginative, colorful, and variable depending on region, gender, and time period. It originates from subcultures and mass media, and is created through playing with words like rhyming, shortening, borrowing from other languages, and changing spellings. People use slang for fun, to be creative or shocking, to identify with groups, and sometimes to exclude others.