Exclusive laughter

I have discovered a secret laugh that Jane and Alice share. It usually comes after Jane has convinced her younger sister to say something she knows she couldn't get away with saying herself -- calling her father a poo-poo face, for example.

Their eyes meet and lock. Their shoulders bounce. It is not a laugh shared with the room. It is a laugh shared by two. It is a conspiracy.

I can very much imagine this same laugh being shared by a couple of 90-year-old sisters. It's a laugh I'm sure will outlive me.