What is "speak!"

Anthony Negrete (born February 25, 1986) better known by his stage name Speak! (stylized as SPEAK!), is an American rapper from Moreno Valley, California. He is known for having co-written the 2011 song Gucci Gucci performed by Kreayshawn and collaborating with various Odd Future members such as Mike G and Syd tha Kyd, who recorded his 2011 album Inside Out Boy