Related:

• People can fly. Anything can happen.
• Where anything can happen, but usually doesn't.
• Anything that can happen will happen, unless your test plan provides for it to happen.
  -- Weinberg's Programming Principle #3...
• For medium number systems, we can expect that large fluctuations, irregularities, and discrepancy with any theory will occur more or less regularly.
  (This is more succinctly expressed by Murphy: Anything that can happen, will happen....
• Accidents can happen.
• Key Punch - the blow that causes the knockout.
• Anything's possible, but only a few things actually happen.
• You wouldn't happen to have anything less... ducky?
• If you don't want it to - it CAN happen.