I agree with the rule, but the discussion reminds me of one of Mitch Hedberg's routines:

"I was at this casino minding my own business, and this guy came up to me and said, 'You're gonna have to move, you're blocking a fire exit.' As though if there was a fire, I wasn't gonna run. If you're flammable and have legs, you are never blocking a fire exit."
http://www.comedycentral.com/video-c...-the-fire-exit