The term hyphy (// HY-fee) is Oakland slang meaning "hyperactive". More specifically, it is an adjective describing the hip hop music and the culture associated with the area. The term was first coined by Oakland rapper Keak da Sneak.
An exclamation used to denote ignorance of something, often interchangeable with "I don't know". Comes from pronouncing "IDK" as "I deek", shortened to "deek". Originated at Berkeley High School in California.
A versatile slang term based on the luxury fashion brand meaning okay/good/great/awesome/fresh/etc. Originally used in the streets but now popularized by the masses. Sometimes abbreviated "gooch" if you're an expert in its use. To be all Gucci is a wonderful thing indeed.