Do Under Others As You Would Have Them Do Under You.
Do under others as you would have them do under you.
Do unto others as you would have them do unto you
Do unto others what you would, and then split before they realize what you have done.
Astronomers do it under the stars.
Australians do it down under.
Baptists do it under water.
Pheasants do it under glass.
Plumbers do it under the sink.
Robbers do it under arms.
Spies do it under cover.