Primarily these lost emotionally stunted individuals will posses a near fervent love of ICP, Nickelback, Slipknot or any "New Metal" types of music, they will attend these shows with an almost religious bent, looking to commune with others of their species, to fulfill a cultural sharing and acceptance that they otherwise be unable to find in the real world.
The most simple, efficient, and safe manor of determining whether or not an individual indeed be a Porkslap is to call out to them from the window of a moving vehicle in the style of the traditional Porkslap salutation (ie. "Yo, Porkslap!?" if they respond either by waving, grunting, eye contact, or any acknowledgement at all, then yes they are indeed a Porkslap.
Friend 2:"You mean the one with the hatchet man tattoo down the entire left side of his face?"
Friend 1:"Yeah! what a Fucking Porkslap!"