Close Encounter of the Adult Kind

A husband and wife were sitting on the front porch one afternoon, enjoying the cool breeze and sunset.
As they say there, a small spaceship landed in the yard, and an alien man and woman stepped off, came up to the porch and introduced themselves.
After chatting for a while, the alien woman looks at the alien man, and says, “Should we ask them?”
The alien man shrugs and says, “Sure, why not?”
The alien woman looked at the couple and said, “We were wondering what sex was like with humans, and thought you might like to swap partners for the night to see what sex is like with us.”
The husband looked at his wife and said, “What do you think?”
The wife said, “I don’t know. We’ve never done anything like this before, but it might be fun. I guess we can if you want to.”
So the alien man and human woman go in one bedroom, and the man and the alien woman go in another.
As the alien man gets undressed, the woman noticed his penis and gasped. The alien man looked down and said, “Is something wrong?”
She said, “No, no. I’m sorry. It’s just here on earth they’re usually a little bigger.”
He said, “Oh. No problem.” He reaches up, pulls his right ear, and the penis grows out to about 7 inches long. “How’s that?”
“That’s fine, but there usually a little thicker.”
“No problem.” He reaches up, pulls the left ear, and it thickens up.
“That’s perfect!”
The couples spent the night together and came out for breakfast the next morning. After eating and visiting a bit more, the alien couple thanked the humans for the evening, said their goodbyes, and flew off.
The husband asked the wife what she thought.
She said, “It was fun and different, but I don’t care to do anything like that again. How about you? How’d you like it.”
He said, “Well, it was fun, but she damn near pulled my ears off!”