Typical first comment to any post, underscoring that the author is the first. Probably a contraction of первый, на хуй (I’m first, screw you).
Вт, 23:22: Первый нах в ворота Польши.
Tuesday, 23:22: Bloody first one in the Polish goal.
(Konstantin Tarasov @ ЖЖ, 06/2012)