Telling stories (and doing it poorly) fantasizing about misfortunes befalling one’s enemies is not comedy.
If it makes the author laugh, that’s one thing. Given our fallen nature, I believe such fantasies are far more common than any of us would care to admit. But to think that sharing such thoughts would make an audience LAUGH is beyond depraved.
On the other hand, an author would be well within the bounds of propriety to use such disturbing thoughts as fodder for a psychological thriller about a serial killer or an international terrorist plot?
Not funny. Not even a little bit funny. But in the proper context, it could be a helluva fun beach read.