You look around the room, thinking about what you want to do first with the new toy you just created for yourself. Being a boy on the edge of adulthood your eyes naturally gravitate towards Amanda's chest. The neckline of the shirt she was wearing was just low enough to show a hint of cleavage, and judging from what you could see her breasts had a decent size to them, probably just under a C-cup by your rough estimate. You wished you could get a better look to be sure, but then have a thought: why stop there? You have not one, but two ways to get as much time with them as you want! And you do need to test out this new pen.
Luckily for you, Amanda hasn't noticed you staring just yet. You're tempted to just reach over and start writing on her breasts since you already told her not to notice you writing on things, but you still want to play it safe, just in case she gets freaked out by you'll be doing to get close enough to do so. Plus, it would be nice to have a bit more space to write on.
Estimating how much time you'll need off the top of your head, you uncap the marker and say ~You will not notice me or anything I do for the next 90 seconds.~
You give yourself a few seconds to make sure the command goes through, then scoot over so that you are right next to Amanda. Confident in her lack of reaction to this, you position yourself in front of her and pull down the neck of her shirt, exposing the top of her right breast and the edge of her plain white bra. Once again, there's no reaction from Amanda, save a slight movement of her head to see the TV which you chalk up as a subconscious reaction to your own body blocking her view.
Not wanting to waste any more time than necessary (especially since you don't have a watch handy), you write 'Property of Dan' on the breast as small as you can without making the writing illegible, then blow on it gently to hasten the ink drying. You move over slightly and repeat the process on the left breast just in case, then quickly fix her shirt before moving back to where you were sitting. Realizing that Amanda still has to read what you wrote before the effect is complete, you tell her, ~Look down your shirt and read the writing on your chest. You will not be aware that you did this.~
You watch as Amanda pulls the neck of her shirt up and looks down it. After a few seconds, which you assume is due to her turning the upside-down writing around in her head, she lets go of the shirt and goes back to watching TV. You wait a little bit longer to make sure that the time limit you set has run out, then ask, "Hey Amanda?"
"Hmm?" she asks, looking over at you. She doesn't seem to be acting out of the ordinary, so it seems you timed everything just right after all. Now for the moment of truth.
"I want to play around a bit," you say to her, gesturing to her boobs, "May I?"
"Not sure why you have to ask," she said, setting her soda down and sticking her chest out a little, "They belong to you, not me. Go wild."
"Thanks," you say with a grin, then scoot up next to her again and start groping her breasts, gently at first, but getting more confident over time. Amanda simply settles in and lets you do so without protest, doing her best to focus on the movie. You can't help but think to yourself how awesome her boobs feel, even through her clothes. Though you do wonder...
You reach down and start to lift Amanda's shirt up. This ends up getting a reaction from Amanda, causing her to jerk back in shock and ask, "What are you doing?"
"Getting your shirt off," you reply, doing your best to sound indifferent, "I want better access to my tits."
"I wouldn't really call them 'tits'..." Amanda says uneasily.
"Well they aren't really yours to name, are they?" you reply, "Now, please take off your shirt. And your bra too, while you're at it. Or would you really deny a man access to his own tits?"
Amanda hesitates briefly, then pulls her shirt off up over her head.
"Okay, but try to be more careful, okay?" she requests as she leans forward and unfastens her bra, "These br- tits, belong to you, but I still feel everything you do to them."
"I'll try, but no promises," you say, watching as the bra drops off of Amanda's breasts. Once her tits are revealed in all their glory, you cup them once more, feeling the soft flesh against your fingers. You can tell that they definitely have some heft to them, and other than the words you wrote on them are nearly blemish-free. As you start playing with them again, you notice her dark pink nipples start to stiffen.
"Is this turning you on?" you ask as you continue to play with her tits.
"A little," she admits with a blush, "Your tits do feel pretty good. But it's also a bit chilly in here without my shirt and bra on."
"I see," you say, bouncing her breasts up and down in your hands to watch them jiggle, "These are C-Cups, right?"
"Yeah, they are," Amanda answers, "They've been that way ever since I was in high school."
"Awesome," you say, "I see you take great care of them too."
"Thanks," she says with a smile, "I'm pretty proud of that. The last thing I would want is to have ruined someone else's br- tits, sorry."
"It's fine," you say with a chuckle as you start rubbing your fingers around her nipples to hasten their stiffening, "You can call them 'boobs' or 'funbags' if you'd prefer."
"I'll keep that in mind," she says, inhaling sharply as you gently twist one of her nipples.
You find it amusing how she just seems to accept that her tits have belonged to you all her life, even though you only met her less than an hour ago. Apparently, she was either ignorant or flat-out ignoring any possible contradictions with that statement in order to make the writing true. Either that, or she just thinks that her breasts did belong to her, until they suddenly didn't.
You think about asking her, but you also feel like not confusing her too much by pointing any of that out. After all, you're having plenty of fun just playing with the two beautiful tits in front of you.