An individual who is limited to words such as "hey!", "what!", "yeah!", "put it up now yall", "oh!", "uh", or "buh" when performing backup vocals for a rapper.
While performing with a well known rapper, a hey man will typically make these sounds in an attempt to add to the song.
Dr. Dre: still taking my time to perfect the beat.
Hey Man: what!
Dr. Dre: and I still got love for the streets
Hey Man: uh uh yeah