An After-School Snack

Shannon and Laura had been friends ever since the first grade. Now, it was their seinor year in high school, and they couldn't be more different. Laura had always been a good girl, and Shannon liked to go out and have a good time. The two girls were walking back from school, when Laura turned to Shannon.
"Shannon, this sounds weird, but what does it feel like? I mean...having sex."
Shannon smiled, knowing that it had been very hard for Laura to even ask that question. "Haven't you ever, you know, masturbated?"
Laura's eyes got wide at the question, and her cheeks turned pink. "Well, no. Not really."
This time it was Shannon's turn to be surprised. "You've NEVER done it?"
Laura looked down and said, "No."
The two girls walked up to the door to Shannon's house, where they usually parted, Laura walking down the street to her house. She paused, and Shannon invited her in.