Encyclopedia Dramatica PUA is a parody site that pokes fun at the seduction community and its terminology. From the site itself:

PUAs, or Perfectly Unquestionable Alibi are a special breed of nerd that are beginning to take a foothold in the competitive market of studio apartment real estate. There are claims that PUA stands for Pickup Artist, but the only thing these artists have ever picked up are beat-off blisters and a bag of Cheetos. In all actuality, Pickup Artistry is the great Guido scam perpetuated upon the sexually frustrated sector of the internet in order to farm more gold for hair gel and Old Spice.