18 yrs old, college smartass [in contrast to middle aged
  smartass?] I loved to go around to my Tolerant friends, waxing
  poetic about their tolerance. All I had to say is: *"If you're
  so tolerant, are you tolerant of intolerant people, because if
  you're only tolerant of tolerant people, you're more intolerant
  than them." The resulting social melee was priceless.* They were
  so busy feeling superior they didn't stop to think how
  intolerant THEY were being. Yeah, I was/am a prick sometimes. :)