It's sort of like 'Fuck' in that it can be a noun or verb, turned into an adjective or adverb, and always works as an interjection.
After taking her out to a fine $6.99 Golden Corrall Steak Buffet dinner, a brotha could have at least expected a spurf from that beeotch.
Spurf! I guess I be yo baby's momma's momma
That betta not be spurf on my cheetos.
Sometimes, late at night, when I'm all alone, I think about that time in the Turkish prison when the Bala brothers took turns spurfing me until passed out