A misspelling of "
nothing personal, kid" meant to
detect the presence of
newfags, who, unaware of the in-joke, will attempt to correct the spelling. Similar in purpose to phrases such as "turn 360 degrees and walk away" or "RIP in pieces".
veteran: "*Teleports behind you*
Psssh, nothing personnel, kid."
newbie: "I think you mean to
say nothing personal?"
veteran: "Psssh, you must be new here."