A sub category of pornography, in which a hot 9 is standing next to a plain 5. The plain looks of the 5 allows the 9 to transcend the barrier of being a 9 and attain the perfection of being a 10.
This new 9 to 5 porn has really helped employ a lot of mildly attractivepeople in the porn industry.
An extremely hot chick who becomes much less so when she begins to talk, revealing the inner workings (or lack thereof) of her pea sized brain. Not a problem for short term satisfaction but greatly reduces any chance of long-term relationships. A 9 to 5 sometimes shows uncanny knowledge in certain areas, such as the names of Brad and Angelina's kids or the price of designer handbags.
Bob: You see that chick I was talking to - she's smoking hot, but . . .
Ed: But what?
Bob: She thought Dick Cheney was a sort of necklace you wear on your pecker.
Ed: Total 9 to 5. You gonna try to bone her anyway?
Bob: Fuck yeah - I'm gonna show her my Dick Cheney!