Quote Originally Posted by NeonGod
State the source, please? I was always taught that it wasn't.
Until about 1990, you would have been correct. The verb form of the word crept into general usage following its adoption/broad use by the quote/unquote "hip-hop" subculture. So you may well have been taught that it was improper usage by a "purist" only to have mass culture supercede this.

If you want a language where no such changes occur, try a dead one like Latin. English is still alive and changing, quod erat demonstratum.