I saw this thread on Gaia, and it looked fun. Pretty much, put up funny suicide note openers, closers, or one-liners. All suicide note form. Here are a few to begin with.
"I lived life and died trying... Well, I sorta quit."
"God made me do it."
"Don't eat at McDonalds"
"Be careful when you order from Domino's; they use special mushrooms"
"Grandpa's a Nazi, just thought I'd let you know."
"All the cool kids are doing it!"
"You never told me not to run with scissors. This is your fault."
"It was either suicide or rape."
"I didn't want to live after I saw condoms in grandpa's dresser."
"Tag, you're it!"
"You lose the game."