You would say it when something kick ass happens. It is kinda like the equivelent to that snotty bitch Paris Hilton's "thats hot", only its more urban. You must also say it with a deep, loud voice for its full effect, like and angry African American.
Yeah, Nikki let me in through the back door last night, it was FRESH OFF THE GREASE. She was loving it.
Por Bill Braski 24 de mayo de 2006