You bring up a good point - what are the valid defenses against these punishments?
Illness - more than 1 doctors certs can help you avoid the illness punishment.
If you mention something from a TV show thats on during meeting time you must introduce it with a proper disclaimer such as "Normally I wouldn't have seen it since it's on during meeting but since I was down with the Flu..." or "I had to record the program to see it since it's on during meeting time. But I watched it later and...". Without these disclaimers in place before the discussion - the listener will begin the punishment immediately by mentally shunning you while to rattle on about the evil television, perhaps by singing Kingdom Melodies in their head.