Sorry about your dad. I've known some people who have done the same and it hurts to think of them in that state of mind. Not offended by the humor nor do I find fault in those that do, just bums me out.
I feel you and thanks, my mom can't seem to handle the slightest hint at anything suicidal, but I find if properly delivered, any joke can be appreciated. I love comedy and I refuse to let anything change that.
Bleach is the worst way to go. This has been a psa from your local internet guy