Something fun and simple to start with: an orgasm trigger

"That's right, honey, we definitely need to test it~" She kissed his cheek, then whispered, "Such a good boy. So eager to have your cute brain played with, aren't you?"

With her body so close to his, Lily could feel Jake squirm, feel his cock twitch through his jeans. "Y-y-yes, yes, please, do anything you want to me." His voice came out breathless, his tongue tripping over itself to get the words out.

I might be the luckiest girl alive... Smiling, Lily walked over to the couch, sitting on her knees facing the wall and sticking her ass out. "Are you watching, honey?"

"Yes, watching, r-r-ready when you are."

Hearing that made Lily giggle. She didn't even have to look back to confirm it, she knew her boyfriend has his eyes fastened on her ass with a laser focus, ready to lose this thoughts to the beautiful mindlessness she was about to grant him.

One of the many beautiful things about the ass she'd been granted was that Lily barely needed to move to set it to jiggling. There was so much mass to it, just enough muscle to keep it perky, but the majority of its heft was soft and jiggly fat. With an idea already percolating in her brain about what she could do with her pretty boyfriend, Lily did the bare minimum, a small thrust in and out with her hips, but that was enough to get them jiggling.

This feels so amazing... fuck, I can't wait to get penetrated back there... After waiting a second, Lily was ready to check on Jake to see if things were working properly. "Jake, sweetie, are you nice and entranced?"

In the kind of thoughtless, emotionless voice she was getting used to hearing from her partners, Jake replied. "Yesss... in a trace..."

"Good boy. Now then... are you ready for a new instruction?" She did a little bounce, keeping her cheeks jiggling even as Jake made a sound of agreement. "From now on, if you hear me say the word 'messy', you're going to cum. It doesn't matter how aroused you are, or how many times you've already cum. You'll orgasm, immediately. Do you understand?"

There was a short pause before she got her answer. "If you... say messy... gonna cum..."

Lily was tempted to keep going, to fill his head with more verbal landmines, but she was going to keep it simple to start with. After all, this one new toy was the kind that could keep her entertained for hours. "Good boy. Now, wake up." Reaching behind her, she grabbed her cheeks, forcing them to stop, before turning around and sitting down on the couch like a normal person, smiling at her boyfriend.

She watched as he became aware and alert once more, blinking and taking a second to focus on her. "L-Lily? You did it again?" There was so much excitement in his trembling voice, and that only made Lily hornier too. Her little cock was soaking her panties in precum, but she didn't even want release, she just wanted to keep playing with her beautiful boytoy.

"I did. You've got another fun trigger in that head of yours now." Lily smiled at the way he gasped, the way Jake suddenly knew there was something she could do it him with just a word. "Of course, I'm not telling you what it is. After all, haven't you been so excited to show me this sci-fi series?"

Blushing, her boyfriend walked over and sat down next to her. He didn't even try to grab the remote, letting Lily handle turning on the television and navigating them to the proper show. The truth was, Lily was excited to see it, but she was more excited to tease her boyfriend while they cuddled.