This is the conversation Jason and I had just now, coming back from lunch:

Me: "Boo!"

Jason: "No!"

M: "No?"

J: "No."

M: "Yes."

J: "No!"

M: "Yes!"

J: "Nnnnnnnno!"

M: "Yyyyyes!"

[This continues for another 4 minutes or so.]

J: "No!"

M: "Yes."

J: "NNNNN..."

M: "Yes."

J: "...NNNNNNN..."

M: "Yes."

J: "...NNOOOOOOO!"

M: "Yes."

J: "Hot dog."