1
A fake friend on Facebook who you added after knowing them for less time than it takes to brush your teeth. They’re the friend of your friend’s ex who you met at a bar. You don’t talk to them, and they probably don’t even remember your name.
Added you because you both liked pizza. Now you’re friends. You’ve never spoken.
They added you after you liked their post about their cat. That’s it.
They’re your friend of a friend of a friend. You’ve never met them.