Mine once threatened (subtly) suicide because I wouldn't cook his dinner.
Was on a vodka binge and asked me at 7am to cook him some food whilst I was making my daughters breakfast. I refused, said he could do it himself. He spent the rest of the day getting drunker and drunker, asking for food every time I went into the kitchen. Said I had to help him, he was hungry. Come supper time and I'm cooking for myself and my daughter, he asks if he can have some of what we're having. It's like a stand off by this time as he's spent about 12 hours asking me to feed him and I've spent 12 hours refusing or ignoring.
I tell him point blank "NO", he loses it, starts ranting that I don't care about him, how he's such a burden. Get's his coat on and says "I'm going, and if something happens to me it will be your fault, then you'll be happy and be rid of me". I say "Bye" and he storms out. Comes back an hour later and goes straight up to bed. I never cooked for him again.
Mind, that happened the month I joined SR, no wonder I came looking for this place.