Your post reminds me of one day sitting in the History Lounge during lunch hour. Plenty of people, all regulars who knew each other. In one corner some people discussing religion. On the couches, people chatting about politics. By the windows, people debating abortion. All very civil. All very polite.

THEN someone walked in and raised the issue of which way the tiolet paper roll goes on -- lead end to the back or to the front. All other discussions ended and CHAOS ENSUED. People yelling and screaming. Everyone one knew God's Law about how the tiolet paper roll goes on. Very amuzing moment to recollect.