A fork of Rural Dictionary
"Double edge sword" is a silly overused proverb that makes little sense.
Everything is a double edge sword orig. double-edged sword. Nothing isn’t a double edged sword. Even a single-edged sword is a double-edged sword. Because you can cut something with it, but the other end is kind of flat and doesn’t really cut well. It’s kind of a double-edged sword.
-- Louis CK