"W... Well I guess I could try it out. If you say it's fun it must be fun, right?" Lily said.
You turned off the TV.
"Marvelous. Come with me." You said, with a smile.
You took Lily's small hand which was damp with sweat now, and led her to your room.
"Come on, let's take off your clothes. The girls on TV were all naked, right?" You said.
Lily nodded nervously. You'd seen her in various state of undress on a somewhat normal basis, like when you took off her shirt to get her temperature under her arm whenever she was sick, and you'd seen her without pants when you had to help put cream on her butt when she sat in poison ivy a couple years back. And of course she slept in her panties when she went to bed on hot nights since Mom was a cheapskate and didn't use the air conditioning unless it was practically boiling outside.
Lily sheepishly removed her shirt, pants, and white cotton panties in front of you. She felt very awkward being naked in front of you while you were fully clothed. She tried to cover her crotch with her hands. You smiled widely. You felt like she was already under your control now. It took almost no convincing to get your obedient little sister to strip naked for you. And she had a cute little body. Skinny and sickly, sure, but cute nonetheless. Your cock felt like it could burst. You took your hand and began to stroke her soft silky hair.
"Oh, you're so cute when you're like this, Lily." You said.
"Tom, this is weird." Lily replied.
"Ha ha ha, you think THIS is weird? We haven't even started yet." You excitedly said.
You took her hand and put it on the bulge in your pants.
"Ew! Gross! That's your wiener!" Lily said.
She made no effort to remove her hand, despite her apparent disgust. Her small hand continued to rest upon the bulge.
"You know what it means when it feels like that, right? It means I'm excited." You said.
Your naked sister shivered. A funny little half-smile adorned her face, like she was happy to be with you, but was seriously weirded out by touching your hardened cock like this.
"Do you like it?" You said.
"I don't know... Yes?" Lily said.
You stroked her hair some more, and softly rubbed one of her cheeks.
"Yeah, you don't know it yet, but you like it. You just need to get used to it." You said.
Then, without warning, you grabbed Lily by the waist and hoisted her up like a sack of potatoes. Lily let out a scream, but it was a fun scream like when she was on a carnival ride. She smiled and kicked her legs.
"Hey! Put me down! Is this some kind of joke?" Lily said.
She was starting to suspect this was some elaborate prank now. You laughed, knowing this was all very sincere.
Now that you have Lily naked and in your arms what do you do to her first?