When something is good, proper, accepted by society and conforms to social rules. Probably the opposite of niggerlicious. Nothing bad can be considered whiteman.
Air guitar typically the domain of the musicality less endowed is often performed with great vigor. An integral component of this act is the exadurated extension of the upper jaw to emphasise immersion in this impassioned virtuoso moment
"I can't concentrate with Ian's constant whiteman noise. Just apply to grad school, dude! "
Employee #1: "Why is John always in Spencer's office? Is he sucking up for a promotion?"
Employee #2: "No, that's just whiteman noise. You know, Spencer went to Stanford"
An advanced sex position where the female holds the knife, and the boy(s) have a straw. The boy(s) shove the straw up their penis(es) and the woman gets blindfolded. The woman blindly chops at the straw sticking out, and sees how close she can get to the tip. If you get your penischopped off, you are a Matt Whiteman.