Who Needs Enemies?

I was complaining to my friend about someone who is giving me a hard time.

As someone who has always had my back he said,
"Do you want me to fix this person's brakes?"

I said, "No. I prefer the psychological cruelty approach...it's more subtle."

It is at the same time comforting and terrifying to know that:
a) he probably knows how to do this, and
b) he probably was not kidding.