###
NOTE: The characters in this story partaking in sexual activities of any nature are all aged 18 or over.
###
Her long brown hair flowing in the gentle wind, your mother wore a blue checked shirt and matching denims with low heels to accentuate her calves, every gentle breath forced her pornstar chest to expand and attack the shirt that, surprisingly, held itself together against their enormity. Every step she took nearer to your grandma's door compelled her globular calves to tighten up.
Your sister was just as daunting to look at, with equally long and loose blonde hair swept across her slender back covered by a sports top and shorts two sizes too small. Not that she cared much. It was all deliberate.
Your mother turned back with a quick scowl, realising you had lagged behind. "Keep up now - can't keep your grandma waiting." She pressed the doorbell and waited, for both of you to arrive.
You groaned in annoyance just as one of the upstairs windows creaked open to reveal your grandma's face, wrinkled and weathered with age in so many ways you could lose count. "Ah, you're here." Her voice was softly-spoken, a tad soothing. "Go on in. We'll be with you in a minute." A groan came from behind as she lapped a thick pasty white liquid from her cleavage with a finger before sucking on it as she moved away.
"Alright." Your mother slowly opened the door. When inside, you included, you waited in the hall for your grandma to make her appearance. You would have preferred to do that in the comfort of a chair in the living room, not the contrasting icy hall.
Above you, the floorboards started creaking as loud steps moved closer to the staircase, the ceiling spewing out dust in tandem with each stride.
Just then, your grandma appeared, wearing a top, underneath which her ample breasts jiggled as if they had minds of their own. "Sorry I had to keep you waiting. I was just giving your father a quickie. He should be down shortly."
Upon your grandma finally by your side, you abruptly ejaculated at the sight of her breasts beating together, moaning with a quick pelvic jerk.
Your mother caught the display that just occurred with the corner of her eyes and was understandably traumatised by it. "Oh my god! I told you to empty your balls before we left!"
"I did!" you called back with a humiliated expression.
"Oh em gee!" your sister laughed, covering her mouth with a hand.
Your grandma though, acted a little more nonchalantly. "Glad to see I'm providing the desired effect for you -- again." your grandma cooed, gazing perversely at the new dark, dripping stain in your jeans. "I was worried it might've been an accident last time. What a shame that would've been." She smiled, her wrinkles bunching up at the cheeks.
"Sorry about that, honestly," your mother said with embarrassment, a hand to her forehead. She repeated her statement about having asked you to empty your balls before leaving earlier. "I didn't think it would happen again. At least, not so obviously like before."
"I think it's hilarious," your sister admitted with a smile. She always did like to laugh at other people's misfortunes.
"Oh you would, wouldn't you?" you retorted sarcastically.
Your grandma laughed it off, offering a quick glance at your discomfited expression. "Not to worry. He's just gone to prove I'm still desirable for even men his age Though I admit," your grandma added, looking at your Johnson, "you do need to control yourself. I know I;m insanely hot for my age, but you really need to put a curb on your urges, boy. I would hate to discipline you."
You worriedly gulped at the thought of your grandma having to throw you over her leg and give you an old-fashioned spanking, pants down to bare your buttocks. She was always one for keeping with tradition. You dreaded to think what kind of humilation you'd endure.
"That'd be fun to watch," your sister divulged with a smile that coerced her traps and neck to bulge and flex in concert.
"Oh hush, you," your mother cautioned, shaking her head.
You glowered at your sister in annoyance, who stuck her tongue out in response.
Your grandma offered a laugh at your sister's ever-honest reply, driving her tits against her top, straining it more and more. "No, no, I won't do that. I'm pretty sure there are other ways to punish him," she pointed out knowingly.
You gulped.
Your grandma folded her arms. "But right now, I think you ought to change out of that underwear of yours. I think you've a couple of spare pairs lying around somewhere from last time. They should do, she mentioned nonchalantly.
There was no reason to ponder about it. You immediately dashed upstairs like a gazelle, brushing past your relatives.
"Make sure to freshen up while you're at it," your mother shouted up. "God knows you need to!"
///
Half an hour later, you were freshened up and ready to tolerate your grandma. Or at least, you were willing to try. After all, if she made you lose your load without making an effort, imagine what would happen if she did! At any rate, you would need to sit around her.
When downstairs, you found your grandma sat at the dinner table wearing a bikini, whilst your mother, sister and grandpa sat at opposite ends.
"Ah, glad you could join us," your grandma declared with pleasure, offering a smile that emphasised the wrinkles on her face. "I was wondering when we'd see you again."
Reluctantly you complied; taking slow, strategically placed steps closer to the sexy woman who nursed your mother for years, her mammaries swollen with milk and pressing against the table.
She squeezed her breast teasingly, winking. "Go on sweetie, give it a feel. You know you want to."
Your mother offered a quick glower that implied you best do what was asked. But you were conflicted; you liked big-breasted women, there was no doubting that, but the events of last time were a mistake. At least to you.
Despite the confliction, you caved and enveloped your hand round your grandma's tit before realising the full span of your hand barely encompassed even half the gland's size! It was unbelievable!
Your grandma smiled. "Surprised you're so shocked," she admitted, clocking your emergent erection with a grin. "You're definitely happy about it though."
Your mother distanced herself from your grandma, moving towards the fireplace as she watched you take her place. You observed your grandma's breast for a moment, trying to wrap your head round the sheer size of it. large it was indeed; its circumference must have been four times bigger than your mother's.
"Big, aren't they?" your grandma teased."
You jerked forward with lust, suppressing your erection.
"I'll say!" your sister interjected, green with envy. If there was anybody she wanted to be like, it was, beyond question, her grandma. "Mine look like lemons compared to yours."
"Aww, don't worry, sweetheart," your grandma said, trying to reassure your sister. "Besides, I'm pretty sure you'll catch up to me eventually."
Your face turned beet red with embarrassment, concealing your hard-on with a cupped hand.
"No need to be so embarrassed, dear," your grandma cooed as she rose from the table. "It just means you appreciate me in your own special way," she added with an expression so sultry, it would melt anyone's heart!
You nodded in reluctance, suppressing the urge to ejaculate a second time. God knows what would have happened if you disagreed. Every time your grandma spoke, her muscles rippled and popped, so your attempt at controlling your bodily fluids would prove difficult.
///
When it was time for dinner, things only got more awkward. You first realised that would be the case when you caught onto the seating arrangement, which was very particular. Sitting comfortably -- or at least, attempting to -- you realised your mother was seated directly to your left, your sister to your right and your grandma directly ahead.
Your grandpa was to be seated to your grandma's right, but he had the duty of dishing out the meals of the evening. You tried to focus on eating your own meal, but each time a mouthful was taken, your mind drifted away into wondering just how much food your mother and sister could actually digest. Each mouthful to them was a whole meal to you! How much they ate was emphasised by their long and loud burps.
Your grandma was different. Much, much different, and it should not have been as much a surprise to you as it was. While every mouthful your mother and sister ate was a meal to you, her first of many meals to your grandma was a fortnight's worth of food to you! Her stomach was wide and round, visibly pressing against the table's edges. And in spite of that, her brick-thick abs still showed through her top, a button missing from her trousers.