There once was a villiage, long, long ago and far, far away, where two people (never mind if they were male or female) named Each lived quite harmoniously. One owned a sphere, and was very happy. The other owned a cube, and was equally happy.

They would walk down the street side by side, and people would marvel at them and say:

"Two Eaches own two different things and both are very happy!"

This continued for quite some time, long after the Eaches died. It got to the point where if you were arguing with someone and started to mention, "Two Eaches own..." by the time you got to "own" the other person would know exactly what you meant, and start making ammends. As it is rather difficult to continue with "...two different things and both are very happy!" over a handshake and exclamations about how petty the disagreement was in the first place, people began to simply stop at "own" instead of completing the parable.

Eventually the saying was cut down to "Two Eaches own" and the remainder of the parable passed out of common memory.

From On Removing Male Chauvinism from the English Language, a yet-to-be-written collection of short stories by Alexandra Marie Chaser.