Note: this takes place in the second season, the one where the gang discovers Sector 5

It was the night before a holiday at school, possibly Memorial Day, and there were no classes. Aelita was planning out how much time she was going to spend with Jeremy. The two had a crush on each other since Jeremy discovered Lyoko. Jeremy came in to say good night, and they both blushed. Aelita said good night and got in bed. Jeremy left, but he set his clock for an earlier time so he could get ready with Aelita.

The next morning, Aelita woke up to someone poking her. She felt what seemed to be a weird desire to laugh. She just couldn't explain it. Jeremy was the one poking her. "Aelita, you awake yet?" he asked. "Good morning, Jeremy." she said back, happy to see him. "Jeremy, I have a question. When you were waking me up, I had this strange desire to laugh. What is that desire?" she said curiously. "Desire?" he asked back. "Do you mean this desire?" he said as he softly poked her side again. She smiled for a second and said yes. "Oh, that desire. That's from when something tickles you. When you feel a soft movement, your nerves pick it up and the result is laughter, like this." he said as he slid a finger down her side. She giggled for a moment and he stopped. But then Jeremy got an idea that was just a bit crazy, but Aelita would probably enjoy it...