I got the middle seat on a 9 hour flight. The man on my left had...

The man on my left had taken the armrest.
The woman on my right had taken the other one.
Neither of them looked at me.
A middle seat is not a seat. It's a negotiation.
So I took a napkin and a pen, wrote one word at the top and passed it to both of them.
It said...
Under it, I wrote: "Hours 1 to 3, left armrest is mine. Hours 4 to 6, right armrest is mine. Hours 7 to 9, we all suffer equally."
The man read it twice, then signed.
The woman read it three times, then signed.
Then she added a clause at the bottom and passed it back with a straight face.
It said...
The man added, "Blanket disputes go to arbitration."
By hour 5, we were enforcing it like a small government.
When the flight attendant passed by, she read the napkin and asked, "Is this legal?"
I said, "It's binding."
She signed it as a witness.
We landed as three people who will never speak again, and I still have the napkin.