Pizza Faced Kid Syndrome.
Death or health related complications from the aggravation of a Pizza Faced Kid (PFK). Usually associated with online gaming, as smack talk through the internet is easy and "Umadbro?" can really mess with individuals that already have anger issues.
Guy: So whatever happened to Ruburs? Did he die of some
anger induced stroke?
Other Guy: Nah, PFKS. Pizza faced kid syndrome.