You head back outside and overhear your mom and sister talking

Ignoring it for now, having had you fill of surprises for one day (and presuming it was probably just a storage cupboard or another spare room or something anyway) you headed instead towards the kitchen to get yourself a glass of water, before then making your way towards the backyard. Before you'd reached the door though, you heard your mom and sister's voices talking with one another and you listened in as you approached.

"You should come in mom, the water's nice and warm."

"Oh I don't think so, sweetheart. Not today. I don't think either you or your brother would want to see me splashing about like this (your mom presumably referring to her body)."

What your little sister said next however stopped you completely in your tracks, as she just straight out asked, "What, you mean cause of your big boobs?" much to your disbelief.

"You could say that, yes," your mother giggled in response, not quite so shocked as you were.

"Why, because they make you sink straight to the bottom?" Tabitha said with a giggle of her own.

"Not exactly, no. I just don't think I should be parading them around in a bikini in front of my children is all."

"I don't care," your little sister snorted, acting rather blasé and the exact opposite of how you would be if your positions were reversed; not quite able to imagine a more awkward topic of conversation to be actually having with your mom (well, other than discussing just how turned on those two giant silicon-enhanced mounds actually made you that is). "I doubt Tim would care either," she continued, this causing you to turn slightly white with shock, "In fact he'd probably quite like it."

Clearly not thinking this appropriate, your mother gasped, "Tabitha!" as you stood there frozen in the doorway feeling incredibly embarrassed, having gone out of your way to avoid hinting in any way how attracted to her figure you were, and in one fell swoop your sister had pretty much just gone and done exactly that (in a round about sort of way).

"What? It's true!" Tabitha replied defensively, "Boys love big boobs, and you've got like the biggest boobs ever now!"

As embarrassed as you were by this however, you were actually rather eager to hear what her response would be, craning your neck slightly as you stuck your ear out a little closer towards the door. "Yes, well perhaps that's true. But I'm his mother, so I think things might be a little different," she told your sister, unaware of just how wrong she was, her answer though filling you with a great deal of relief.

Half mumbling, "If you say so..." your little sister thankfully moved on from this and instead asked another question that knocked you for six. "What do they feel like anyway? Are they like plastic?"

"Tabitha, I don't really think we should be..."

"Oh c'mon, mom, I'm curious. I've never met anyone before with fake ones. Especially not fake ones as big as their own head!"

"Well whether or not you have or you haven't, it's hardly something we should be discussing," your mom told her, trying to change the subject, "Now come on, get out of there and help me with these burgers."

"Alright. But you were the one who said we should all get used to you as you are now and ask questions whenever we have them and stuff..." Tabitha replied as you heard her pull herself out of the pool, telling your mom this in the ultra manipulative manner that only a 14 year old girl could muster.

"Yes, but not about my breasts."

"Aw please, mom. Michelle Stevens says her big cousin got fake boobs and they felt just like rocks. I just wanna know if yours do too."

Though you weren't entirely sure why your sister had suddenly gotten so interested in your mother's chest all of a sudden (having seemed so grossed out by it before) and were obviously somewhat mortified by how casually she was bringing this all up, you had to admit that what she was asking was definitely something you wanted to know yourself, having very little experience with the female flesh as it were but being extremely curious as to what those huge fake boobs actually felt like, and so eagerly awaited her reply.

"Oh alright. If you must know, they don't," your mother finally relented after a bit more pleading from your sister, informing you both that, "They don't feel like rocks or like plastic. They're firmer certainly than normal breasts, and much, much larger, but they're actually rather soft and squishy." Hearing this caused an inadvertent little twitch in your swimming trunks; your mom's description of her tits causing you to get more than a little turned on again. "Okay? You happy now?"

"I guess so," Tabitha said, breaking into a nervous little giggle, "Can...can I feel them?"

Your mom's reply was unsurprisingly, "No. No you can't," though her tone suggesting she found this question more amusing that upsetting. "Now stop asking all these silly questions and go find your brother. I don't know what's taking him so long in there, but these burgers will be cold if he doesn't hurry up."

Snapping out of the shocked fuzz that hearing Tabitha ask if she could feel your mom's tits had caused in your brain, you hurried quickly back through the living room and dove into the bathroom again, not wanting your sister to catch you having skulking around the doorway, listening in. A couple of seconds after getting the door closed, you heard her shout your name, telling you to hurry up in there, and composing yourself for a second time, you flushed the toilet (for show) and made your way back out into the living room where your sister was waiting for you, doing your best to act like you'd been in the toilet all this time.

"C'mon, the burgers are ready," she said, before heading back outside herself.

So, following after her, you headed over to the table where your mother was now happily serving up lunch, trying as best you could to both ignore what you'd just heard moments ago, as well as what you'd seen on that DVD cover inside, and instead simply enjoy a nice family meal.