Related:

• Statisticians probably do it Algebraists do it in groups.
  Al Sethuraman, Calma Company, San Diego...
• Heisenberg might have slept here. Moebius always does it on the same side.
  Statisticians probably do it Algebraists do it in groups....
• Miscellaneous Ethnic group
• Design flaws travel in groups.
• The Four Food Groups: Caffine, Chocolate, Sugar and Sex.
• The 4 food groups: Fast,Frozen,Instant & Microwave
• WHY DO POLISH PEOPLE ONLY GO TO MOVIES IN GROUPS OF 17 OR MORE?
  BECAUSE THE SIGN OUTSIDE STATES " UNDER SEVENTEEN NOT ADMITED!...
• The only groups we didn't see demonstrating in the streets of San Francisco were the Pro Apathy Party and the Street Cleaners Union.