Take N, SN, put an ExitBag on, put your head into a homemade guillotine grabbing the rope that holds the blade with your left hand, and then shot yourself in the head with the other hand.
Alternatively, tie a grenade to a rope tied around your waist, hold the grenade in one hand, stand on top of a building, pull the pin of the grenade and shoot yourself in the head with a shotgun you held in the other hand.
(Despite popular belief, grenades don't go off when you pull the pin, grenades go off when the spoon pops off, which the pin holds in place, so as long as you hold on tight after you pull the pin it should be fine. Hell, you could stick the pin back inside if you wanted)
(This is a joke, I do not encourage illegal usage or possession of weapons, including suicide)