I'm not sure what being proft means, but I think it has something to do with being witty and sarcastic (even annoying). This site I ran across has a number of fairly funny lists and "how-to's." My favorite is "How To Be A Successful Overlord." I'll list the links to their site, because it's kind of heard to navigate (I think that's on purpose - they're being "proft")...
How To Be A Successful Overlord (My Favorite)
How To Be Proft At Wal-Mart
How To Be Proft At Work
How To Handle A Telemarketer
Proft Cure For A Bad Day *Language Warning*
404 Error Page (Proft Style)
Proft Home Page