Related:

• Sex: the thing that takes up the least amount of time and causes the most amount of trouble.
  -- John Barrymore...
• The thing that takes up the least amount of time and causes the most amount of trouble is sex.
• Sex takes up the least amount of time and causes the most amount of trouble.
  -- Murphy's laws on sex...
• The trouble with being poor is that it takes up all your time.
• Given a sufficient number of people and an adequate amount of time, you can create insurmountable opposition to the most inconsequential idea.
  -- Devyver's law...
• The amount of work done varies inversely with the amount of time spent in the office.
  -- Cropp's Law...