a really though person usually involved in gang violence and he usually always wears his hood on and most of the time he has opps . However the opps get dealt with because he has a blade . he is also a drilll artist and likes to take the mick out of other people . He is most likely Russain but likes to show off . he acts hard because he has the right to and if anyone acts up to that then they get chefed
This factor is incorporated into any monetary calculations where escalation is anticipated based on mathematical models that have zero accuracy and are presented as having merit.
Also see 'math magician'
"Fantasy Football is a win-win if you include the Petrus Factor" - Guy Who Doesn't Check His Math
"The Petrus Factor Makes perfect sense to me" - Donald Trump
Someone who's Annoying like a Petru, is someone whos kills you when your AFK, kills you when healing even though the fight is over. And then complains when they're losing.