Hey there, and welcome. Sorry you're here. N is an abbreviation for Nembutal, it's a substance that helps people ctb (ctb stands for either "catch the bus", as in catching the bus to the other side or "cease to breathe". Both meanings work, but I digress)
From what I've heard, N is apparently a pretty decent way to go, however it's difficult to obtain. Best of luck in whatever you choose to do
Practicality aside, death by eating too much Nutella sounds like a pretty tasty way to go haha
Edited for grammar