Means prom night rape. Where you wanted to fuck a woman all through high school and could never get to. So on prom night you see it's your very last chance and rape her.
John says he's going to P.N.R. tonight.
Stands for prom night rape.
Where you have wanted to get some all through school but the chick always kicked you to the curb and since it's prom night you know it's your last night to get some. So you decide to get some no matter what she says ect.
He said he's going to get some P.N.R.