A couple from Mars lands on the earth and soon meet up with an earth couple.
They hit it off so well and begin asking questions and learning about life on each other's planets.
Eventually, the conversation turns to the question of sex. Each couple tries to explain how they mate, but they find it somewhat difficult to explain.
Neither can understand what is being described so one of the ladies suggests they switch partners for an evening so they can get a better understanding.
The earth woman and Mars man go into the bedroom and they undress.
The earth woman says "Gee, you're small".
The Mars says "no problem" and hits his forehead and he grows
longer.
The earth women is amazed and says "not bad".
The Mars man hits his forehead again and grows even longer.
The earth woman is pleased but says "It's kind of narrow".
The Mars man pulls on his ears and get thicker.
The earth woman says "Not Bad".
The mars man pulls on his ears and gets even thicker.
The earth woman is now so pleased, so they get busy with the act.
The following morning the two couples meet in the lobby and
the earth man asks his wife how it went.
She says "It's the best I've ever had. How about you?"
The earth man says "My head hurts so bad. She kept hitting me on the forehead and pulling on my ears."