A guy and girl are walking through the park

when suddenly a spaceship lands nearby. They head over to investigate, and meet a lovely alien couple. They looked and spoke just like humans, although they had a slightly greenish tint to their skin. The couples get to talking, and eventually they arrive on the topic of sex. "How do you have sex," the human male asked the other couple. "Pretty much the same as you do, but with a few differences," replied the aliens. After a couple more minutes, the couples decide to switch partners for the night. The female human explains to her alien lover that she's pretty nervous, but he tells her not to worry. As he undresses, she can't help but let out a laugh at the sight of his microscopic flacid penis. "It's so tiny," she said. "How are we going to do anything?" The alien laughs, and again tells her not to worry. He begins to slap himself on the forehead, and his penis grows to an impressive length. "Oh wow," she exclaimed. "But it's still so thin!" Again he told her to calm her nerves, and he began to pull out on his ears. As he did, his penis widened to an impressive girth. The woman was speechless, and they proceeded to make hot passionate love all night. The next day the couples returned to their respective partners, and the aliens departed. "So...how was it," asked the man. "I'm not gonna lie, it was pretty fantastic," she replied. "How was it for you?" "Oh it was amazing for me too," he said. "It was just weird...she kept pulling my ears and slapping me in the forehead."