Related:

• Of two possible events, only the undesired one will occur.
• Second Law of Business Meetings: If there are two possible ways to spell a person's name, you will pick the wrong one.
  Corollary: If there is only one way to spell a name, you will spell it wrong, anyway....
• If there are two possible ways to spell a person's name, you will pick the wrong one.
  -- Second Law of Business Meetings If there is only one way to spell a name, you will spell it wrong, anyway....
• Sooner or later, the worst possible set of circumstances is bound to occur. -- Sodd's Second Law
• Sodd's Second Law: Sooner or later, the worst possible set of circumstances is bound to occur.