You and Sarah never tried fetishes: neither of you were interested enough. But if grabbing her feet made her feel like you just licked her nipple, it was worth the try. You pull out — to her disappointment. But her moans continue as you kiss stroke down from her tender ass checks to her dainty legs. She breathing indicates that this is teasing her in a sensitive way. You flick you tongue across her muscle and she groans in approval. You trace your fingers down to the back of her knees and you feel her spasm slightly either from being tickled or because of the heighten sensitivity. You plant your hands on the top of her soft calves and stroke your hands to her butt again; you smile in satisfaction as she lets out a long breath of pleasure before you grab her cheeks where she lets out a little sudden cry. You stroke your hands back down her legs and continue to kiss her legs with your sloppy tongue. Her calves taste wonderful and you finally reach her ankles where you kiss each one before gliding your tongue across her foot. You lift it up and taste it: it's... oddly wonderful. You stroke your tongue around her foot and suck at any part that you can, all the while Sarah moans with pleasure and approval. She rolls over and you can see the effects of the virus on her face: her lips, parted in an "O" shape, are more full and pink, her hair has started to change shades brighter and her face is much more slutty and dizty. You twitching cock gives you an idea. You take the other foot and place it on your cock and she immediately starts to stroke it with her soles; her parted legs reveal her soaked pussy: she's turned on by this, really turned on. You feel her heel gently press against your balls while the ball of her foot presses against your shaft with each stroke as you worship her feet. This was never one of your kinks, but you feel driven, strangely enough. You start to moan from her footjob and you notice that you sound weird, but you ignore it: this pleasure, for her, for you, was more important than a weird change in voice. You feel your cock get harder and the pleasure become more and more incredible, but her strokes become smaller despite her foot stroking against the full length of your dick each time. Sarah grabs your feet and starts to suck on them, you thought of it as weird, but you find out why she enjoys it so much: her tongue gliding over your painted toe nails as she sucks on them, the pressure of her mouth against all of the sensitive areas, her tongue wetting and caressing all of the right places — it makes you wet. You open eyes when you realise that you are confusing your moans for Sarah's.
"I never knew feet felt so good!" her voices is painted with lust and amazement. "What do you think, Brad?" Your memories are in a haze, you hold onto one memory for a bit — something about sweat — and then it's gone. You giggle as you give her big toe a slurpy, wet, suck.
"Who's Brad? I'm Brie. And I think less talking, more sucking." you find yourself responding with.
"What about feet fucking?" She gives a coy smiles with her teeth biting her tongue.
"Um, yeah!" Sarah presses her toe against your cock head — now your clit — and you shudder from pleasure as she starts to part you new pussy lips. You feel your nipples harden even further as your bouncing breasts turn you on further. You abandon sucking her foot and run it against your chest instead, which drowns you in lust as you feel you pussy flow even more, wetting her toes even more. You let go of her foot to land your hands on th bed before you collapsed and Sarah takes full control: she ran hot-pink painted toenails in circles around your new, plump, breasts and squeezes your nipples between your toes; she gently toggles on them and you feel jolts run down from your nipple, through your body and to your still shrinking — and still becoming more sensitive — clit. She pats her foot against your chest, making them bounce up and down, side to side, back and forth. You finally grab the foot playing with your new pussy and you insert the toe inside of yourself. A rush of pain which is outweighed by the feeling of bliss, echoeing from your freshly parted lips, into your whole body. Sarah giggles as she wiggles the toe which makes you loose all sense of everything, but the feeling between your legs and the feeling radiating from it. She starts to pull her leg back and forth while her other foot toys with your fattening nipples and expanding breasts. Your feet leave Sarah's mouth as she rubs them against her chest and the contact of skin against skin sends new waves through your legs. You gasp and you moan and you shout and you demand more and more until you are consumed with the the desire that had to be sated: you needed to keep feeling good, and the only way how was through sex. Wether it was with a dick, feet, a mouth, another pussy or someone else's bouncing boobies, as long as it felt as good as this felt. The door opens in the middle of the blissful moment of excitement and everything new settling as someone sheepishly says: "Excuse me, this might be a bad time, but...."