Stick to the Plan, you don't want to piss her off.

You focus on the task at hand, hefting her breasts to look underneath. You see no trace of stitches and also, her skin looks perfect and unstretched. You've 'come across' enough big boob porn with the actresses sporting falsies and you've never seen tits like this, even years after the surgery.

You know they're fake. You can look at them, hear them, feel them and know that.

"Do you see something?" Shannon says.

"No, your tits... are perfect. It's more like you just grew than had surgery. Are you sure these aren't real?"

"Of course they're not," she says. Her voice gets a muffled echo to it filtered past her massive bosom. "I feel like I'm full of something... like having two heavy balls inside of me."

"Well," you say, pulling away and bobbling them a bit. "That's an accurate Representation. Uh... so, now what?"

When you pull your gaze away from her tits you realize she's staring at you. You pull your hands away defensively. "Uh, sorry I guess I was supposed to stop touching you?"

"That's not it," Shannon say's leaning closer to you. She appraises you critically. "You're being awful calm about this."

"Someone begs to differ." You say pointing down at your erect cock.

She glances down and locks her gaze on it. She smiles. "Yeah, I guess you have a point. I mean, it's really kind of annoying." Shannon eases you onto the couch with practiced calm and rests her breasts on your thighs. Your member stands at full attention, being gently mashed between her cleavage.

"Uh... this..."

"...is what you want right?" She says with a sly smile. "I'll let you in on a little secret. I've always wanted giant tits. Maybe not implants, but I was pretty disappointed when my boobs stopped at Ds." She playfully claps her tits around your cock, kneading it by squeezing her breasts in slow circles. You find yourself wishing your pants would just vanish. "I guess the wish came a little late, huh?"

You bite your bottom lip, trying to keep the word 'came' out of your thoughts.

"You think so too, right? You just finished saying how perfect they are, right?"

"Why are you teasing me?"

"Oh? You want me to take off your pants? I bet you'd really, really like my boobies if they weren't in the way. Maybe you just want to decorate them for me. Or maybe, you think your cum will make them even bigger."

Through the haze of arousal you start to see her point. She suspects you. She's trying to trick you into admitting what you did. It's a dangerous game... as she might be genuinely happy with what you gave her. Who knows what she might do if she had you to thank... or... you to blame.