I am 6'4" and don't fit well in commercial airplanes. For years I've sought the exit row when flying in Coach so as to get some desperately-needed legroom. Yesterday I was telling my friend that for the first time I paid the new Northwest Airlines premium to sit in an exit row. She wanted to know how much it costs.
I said "$15 a leg."
A puzzled look crossed her face. "They charge by the leg?!"
It took me a second to disentangle our crossed communications. I explained it's $15 per leg of the journey, not per leg of the passenger.