"Let's have a little foot growing marathon," your mother states gleefully as she lifts one of her legs to proudly display a beautiful bare foot with five long sexy toes boasting freshly-painted lavender toenails. You both watch her curl her toes for a moment before she turns back to you and continues. "And I think we should start with making my feet at least as big as yours." With that, she drops your heavy foot onto the floor with a thud.
Again, you can only watch with a mixture of wonderment and awe as she stands up and sits beside you on the bed. She positions her feet near yours, over two and a half times hers in length, and gestures to them all. "Come on," she adds, an odd breathy excitement in her voice now. "Make my feet grow."
You grin. "Sure thing, mom." You concentrate on her feet, picturing them as large as yours currently are.
"Ooh!"
"Heh, told you it tingles."
"Mmm... oh, and now the warmth..." She bites her bottom lip and watches as her feet begin to stretch longer and wider, slowly approaching and passing the 12" mark. All the while, she's moaning, her fingers twitching and squirming.
After about half a minute, her feet finally stretch to equal yours in length. Your mother lets loose a long and loud sigh. "Oooh... Oh, that felt so gooood..." she keens breathlessly as she unclenches her hands and separates her fingers from the bedspread. Cupping her hands against her cheeks, she stares in wonder at her two 2-foot feet. "Oh my word... This is something else..." Gingerly, she moves one leg, sliding a large foot across the carpet. Goosebumps blossom up and down her arms. "Oh, that feels fantastic..."
She continues to shift her leg back and forth, enjoying the sensation of the carpet across her sole, when she suddenly stops and looks curiously at her enlarged foot. She lifts the foot off the ground a few times, then sways her leg back and forth in the air. The look of curiosity melts into a confused frown, and she turns back to you. "Is it lighter?" she asks before swaying her foot back and forth a few more times. "Because it... it doesn't feel all that different." She turns to look back at her foot. "I mean... it kinda feels heavier, and I can't really swing it back and forth as easily as I could with my regular-sized feet, but it doesn't feel like I'm lifting a foot that by all rights should weigh thirty or forty pounds."
You also frown at this and experimentally lift your own feet from the floor. A cursory test and you come to the same conclusion, that your massive feet aren't weighing you down as much as you think they should.
Then your mother snorts in bemusement. "Good grief, look at us. There's an easy way of telling if they've gotten heavier." And saying so, she rises from the bed and makes her way for the door. "I've got a scale in the bathroom," she adds, her voice a bit sidetracked by the awkwardness of walking with such newly grown feet. "Come on."
You both make your way to the master bathroom, and it thankfully doesn't take too long to get used to getting around with your large feet. As you enter, you notice your mom setting the scale, a standard analog model, down in the middle of the bathroom. "Okay, you first," she commands, beckoning you forward. Shrugging, you step onto the scale, then shift to standing on the balls of your feet in order to keep from completely covering it.
Sure enough, you weigh about seventy pounds more than normal. You step off the scale to let your mother take her turn. She also weighs much more than normal.
"Well, that's certainly odd..." you muse out loud.
"And growing feet aren't?" she returns wryly.
"Good point." You grin as a thought comes to you. "Hold it right there, mom."
"What fo--ooo--oooohhrrrrrnnnn..."
Her question melts into a pleasant moan as you use your powers to make her feet grow some more. While she occupies herself with the sensation of growing, you take the time to check the scale. Sure enough, the needle is gradually creeping higher and higher on the weight scale as her feet grow larger. Nodding in satisfaction, you cut off her growth at 36" this time. "Looks like the power that lets me grow someone's feet also gives them the power to move them." You nod. "Yeah, I guess it wouldn't be fun if you had big feet but you couldn't go anywhere with them..." Your mother absently steps off the scale, and you thoughtfully pick it up and return it to the corner.
"Makes sense," your mother breathes, then begins chuckling. "Well, son, it looks like I'm winning now..."
You turn, just as she easily picks one of her large feet off the floor and presses it into your stomach, trapping you against the wall. You lose your breath momentarily, then regain it only to lose it once more as her mild but strengthening foot odor begins to waft into your nose. Her toes, all ranging from three to five inches long, pull teasingly on your t-shirt as she curls and flexes them. You glance down to find that her large foot spans the width of your chest, and you can see her perfectly shaped heel hovering down by your shins. All said, it's one of the most fantastic things you've seen in your life. Your fingers ache to touch her beautiful wiggling toes...
Then her comment finally sinks in and you level as smirk back at her. "Not for long, you aren't." You focus harder this time -- bigger, faster -- and before you know it, the tingling sensation has come and gone and you can feel your soles and back sliding against the floor and walls. The warmth and arousal come stronger this time as well, and you feel your member eagerly straining against your boxers again. Before the sensation becomes too much, you stop the growth and pause to catch your breath again. And after looking down to the floor, you toss a grin back at your smiling, excited mother. "See. Try to compare with these..."
You heft an enormous six foot long foot off the floor and bring your toes up to her utterly enamored face. You laugh, realizing your big toe is as large as your mother's entire head.
Suddenly, she grabs your two largest toes, separates them, and vigorously buries her head into the fleshy folds in between. From there, you hear her take in breath after breath of air heavily laden with your foot odor, pausing ever so often to run her tongue up and down your toes. The sensation is maddening, and some of her ardor and frenzy bleeds onto you. Following your mother's example, you grab her own foot still digging into your chest and, with strength through intensifying lust, easily heft the weighty foot to your own face and reciprocate her ministrations on her own, smaller digits. You feel your mother spasm in response, and she begins to moan loudly between deep breaths.
Within a minute or so, you both reach some sort of peak, and after one final breath and mutual clenching of toes, you each drop the other's feet and slowly sink to the bathroom floor. It takes another minute for you each to come back to yourselves.
"Oh my..." your mother breathes airily, as she absently strokes the tops of her feet. "That... that was... incredible..."
You can only nod, staring wide-eyed at the enormous feet covering the floor of the bathroom.
"Still..." she adds, a slight hint of accusation, "it's not quite fair when you can make it so your feet are always larger than mine. And I've noticed that as they grow, they get more sensitive, and the feelings get even stronger... So you probably enjoyed that much more than I did." She stares longingly at your giant feet, then offers you a beseeching smile.
"Please, son, won't you show your mother some love and respect... and let me win this little competition?"