I have a co-worker who is batshit crazy.
Some examples of what I mean:
-He has an extremely low tolerance for frustration. If the computer gives him an error message or won't do what he wants, he starts yelling "motherfucker shit cunt whore bitch!" over and over. He sounds like a demon when he does this. I'm not joking. His voice changes from a normal speaking tone to something you'd expect to hear from the movie the Exorcist.
-He once randomly started barking like a dog. I tried to tell my boss and he said I must be exaggerating. I was not. You cannot make this stuff up.
-He has beef with another co-worker from the day shift. He has, on numerous occasions, described to me in detail how he would kill him if he had the chance. in one memorable instance, he told me he would "Cut off his head and stuff his balls down the gaping whole of his decapitated stub."
-Randomly, something of his will go missing. Every knows he has lost it himself, because it's always something that no one would ever steal. You know those plastic bowls with the lids that take out sometimes come in? Yeah. He uses that as a cereal bowl and washes it daily. One day, he couldn't find it. So he flipped out and went on a rampage, accusing a random (and I'm sure totally innocent) person of "fucking with him."
Everyone is convinced he is harmless. He might very well be. He has been here for years and he's never actually done anything violent. Of course, everyone thought the same thing about Seung-Hui Cho before he lost his shit and killed 32 people, so who knows.
Bottom line is, the boss will not fire him.
I work alone at night with him. He is the security guard (so ironic!) There's no one else here on the property with me (except hotel guests sleeping upstairs). It's just me and him. I otherwise really, really love my job, and anyways, it's not an option for me to quit financially
As far as safety goes, I'm covered and we'll just leave it at that. I am not afraid he will attack me physically.
How would you deal with something like this? Do ignore the behavior? Address it directly? How would you handle the emotional toll of having to be around someone like this all the time?