The act of using the Internet feature on your PSP to go to dirty sites watch porn such as 89.com. Sometimes, the user may click the "save" link on the pictures and store them to their PSP's memory stick so they may be away from an access point whilst giving themselves pleasure. People watching psp porn could be found at the internet cafe, panera bread (or any resturant that has free wifi access), hotel rooms, or even the public library. A dead give away is when they have a sketchy look on their face and are huddled in the corner in attempts to hide.
The other day, Elliot was trying to watch PSP porn at the library down town. It was a shame he was caught in the kid's books section.