A married couple was walking down the street when an alien spacecraft landed in front of them.
A married alien couple walked out and said, "Hello, earthlings, we come in peace. We are scientists from the planet GRUDO-X and we want you to tell us all about your planet."
So they talked for hours, until they came to the subject of sex.
The humans told the aliens how humans have sex and the aliens were in shock!
It was very similar to the way the aliens did it.
The men in the group decided to have a little experiment with switching wives for a night.
When the human woman saw the alien ma
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