I can think of so many ways lol..
1: JUST BLOW YOUR F**KING BRAINS OUT
2: Chain Saw ^^
3: MASTURBATE TO DEATH.... *It could be done*
4: Jump off a cliff
5: Drink.... ACID
6: Stick some C4 in your @SS and light it
7: Throw yourself in a shark tank
And well I cant think of anymore
since no one has mentioned it. Take a watch battery (ANY battery would work) connect a wire to each end of the battery. Then connect each wire to needle. Finally stick one needle in each each hand. What this does is constricts your heart causing your heart to Fail.
Cut your dick off, and bleed to death.
Cut your dick off, and bleed to death.