Ask Amy to play with your cock

"Amy, why don't Liz and you switch seats? You can sit on the couch behind me and play with my cock, and Liz can sit in your chair and watch."

Amy brightens up. "That sounds like a good idea! You don't let me jerk you off enough, Jack." Liz looks comfortable with the idea, and you notice her smirking as she looks down at your erect manhood.

Amy takes her towel and arranges it on the couch, sitting down. "Hey Amy, why don't you take your top off? I want to feel those wonderful tits on my back."

Amy nods. "Sure thing." Reaching behind her back, she undoes a clasp before pulling her shirt and bra off in one smooth motion.

Liz looks on curiously at her disrobing sister as she sets herself up in the chair, showing off her hairless and decorated pussy. Her lips are visibly ruddy and swollen, and the two arrow tattoos pointing towards it have gotten no subtler.

You sit down in front of the now-nude Amy, her legs spread wide to accommodate your hips. She reaches around, gently grasping your shaft. You feel her slip her other hand between you, and you realize that she's taking moisture (and likely semen) from her own opening for lubrication.

"Amy, would you mind if Liz got a little closer? Maybe straddled us on the sofa?" You say.

Amy relaxes a little, then nods. "Sure, no problem."

You pat your lap. "Come here Elizabeth, let's get your pussy nice and close."

Liz looks slightly conflicted: confused, possibly a bit patronized, but hopeful. "Nobody asks me to stand with my pussy at face level. You don't have to do this to make me feel good," she says.

"I'd really like to," you tell her. "Actually, I'm going to play with it a bit... It looks like I'm making you a little wet, after all."

"Oh," replies Liz, still a bit uncertain, "Okay then." She climbs onto the couch and stands with her legs akimbo. Realizing that her pussy is right at the level of your forehead, she widens her stance a bit. "How's that?"

Her pussy is at the perfect level for you to admire it from up close. "Perfect... I couldn't get a closer look at your lovely sex if I tried," you continue, probing at it with your index finger.

Liz lets out a soft moan. "I've never let a boy touch me there before. It's funny that I'm letting some friend of Amy's do it first," she jokes, and then gasps.

"Say, Liz," interjects Amy, "now that you two are better acquainted, what did you come over for?"

"Oh!" says Liz. "Well, I wanted your advice about boys. No offense Jack."

"None taken," you say, drawing a finger down her moist slit, which bucks towards you slightly.

"Aside from being an incredibly horny dude," Amy jokes, "Jack really is a good guy. You don't mind if Liz asks us both for some advice, do you Jack?" She squeezes your cock gently.

"No problem," you say, continuing to rub at Liz's clit slightly, testing how good she is at standing while being fingered. She shudders slightly, but remains stable. "What's your trouble, Liz?"