What is Nrn2?
Acronym for "No Reason Not to".
Most often used in a sarcastic voice, implying there really is a reason not to do something, but that it would be funny to do such action, nonetheless.
1) Hey Lindsay! You wanna snort this blow, then race your SL-65 AMG down Sunset Blvd?
2) Hey man, should we go to the strip club and make it rain?