Dear Oracle, I have a question:
Is the mysterious stranger in my neighborhood a friend or foe?
Or, more specifically, is the person who keeps leaving me cat food on my porch a friend or foe?
By the ancient art of observation and deduction, I conclude that the person leaving you cat food on your porch is:
A FOE!
For it is written in the sacred text of Cat Lady 4:14, "Thou shalt not be a charity cat owner, for it shall be a curse upon thy household."
However, I must admit that it's a bit of a grey area. The person may be a secret agent of the Feline Resistance, sent to test your resolve and prepare you for the coming Great Catpocalypse.