Historical, fantasy, magic, horror, supernatural, survival, vampires, demons, pirates, mutants, ghosts, romance (FxF, MxM, MxF) (Romance should be part of the plot and not the whole plot in itself), etc.
Lyrics:
Sitting on a toilet
Sitting on a toilet
Sitting on a toilet
Sitting on a toilet
Sitting on a toilet
Sitting on a toilet
Sitting on a toilet
Now flush!