Related:

• You may fool all the people some of the time; you can even fool some of the people all of the time
  but you can't fool all of the people all the time....
• You can fool some of the people all of the time, and You can fool all of the people some of the time, but You can't fool mom.
• You can fool some of the people all of the time and all of the people some of the time, and that is sufficient.
  -- Murphy's Thirteenth Law...
• YOU CAN FOOL SOME OF THE PEOPLE ALL THE TIME..etc.etc. - BUT NOT US!
• You can fool some of the people some of the time, and some of the people all of the time, and that is sufficient.
• You can fool all of the people some of the time; you can fool some of the people all of the time
  and that should be sufficient for most purposes....
• You can fool some of the people all of the time, and all of the people some of the time, but you can make a fool of yourself anytime.
• You can fool some of the people all of the time and all of the people some of the time, but you can never fool your Mom.