Matt: You are a leaver of food! You left three spinach leaves on your plate at dinner tonight.
Me: (laughing) You were counting my spinach leaves?
Matt: I wasn't counting them, it's just that three is the smallest easily recognizable number besides two.
(We laugh some more because we think that's funny.)
Me: Oh, except for one, right, haha...
Matt: (stops laughing) One is not a number.