‘penis expansion’ stories

Silfr finally lets Percy have sex with her...with a catch.

Ross wakes up one day and notices that his body is changing.

A late wedding gift leads to a BIG honeymoon.

A college town faces a sexually-charged industrial accident.

A growth serum spill causes some big changes.

Cum pills making a couple's dreams cum true.

My ex invites me over and weight gain and cumflation ensue.

Jackie and Kate play a transformative card game.

Rachel wakes up with a big surprise between her legs.

Two horny friends drink a beverage with horny side-effects.

A sultry sex-sorceress casts her spell on a devout knight.

Ground-breaking new medicine increases the female libido.

Honoka is the new intern in Wonderland.

Years later. Richard continues to grow...

Richard can't stop growing.

Lisa throws a BIG party; then Epilog.

The Johnsons settle into their new life and fame.

Dennis moves to LA and finds his people.

A wager, a contract, a dream.

A ghost story with benefits.

The dots are connected.

Dennis returns to find a coed harem in his apartment.

Dennis returns home after a hard day, to find coeds waiting.

The Johnsons embark on a bright new career.

Andrew has a stimulating checkup.

Johnson's wife cannot leave him alone.

Dennis meets an alien, takes a survey, receives a gift...

A strange virus sends men to the doctor with new growth...

Jack learns the fun, and danger, of controlling appearances.

A cold-hearted detective tracks a reality-warping criminal.

A rookie succubus gets much more than she bargained for.

Elena wants to be filled, and orders the perfect partner.

Adam grows when he's desired. Then the Internet finds him.

A sexy security system complicates a simple break-in.

A young woman learns how malleable her avatar really is.

A wild evening of expansion for Saffron and Nick.

The second succubus arrives!

The Conclusion to both Choose! and Arguments and Alterations.

Bachelor turns into a cum factory on New Year's.

Hyperspermia streamer's balls grow after every session.

People doubt Abby, but those who don't get rewarded!

Jennifer & Sam dive deeper into their sexy game.

I encounter someone at the park and grow.

Jennifer meets Sam and finds a unique game.

With his new-found powers, Michael plumps up his harem.

Hyper hung Makti struggles to control her ever-growing body.

Transition.

Developments, downsides, and betrayals!

Excitement grows, they try to understand what's happening.

An experimental aphrodisiac goes beyond expectations.

A cock that grows larger every time it cums!

Christina's bond with her coach grows stronger...

Alex and Sarah discover some expired magical trinkets.

Gina and Luca are bored during quarantine.

Nanomachines that add up to huge size.

What if Santa could grant your perverted wishes? (BE & PE)

Cursed by a Sorceress, Cham transforms Faye.

A farmer's son plants a magic seed to satisfy his lusts.

They transform into each other's desires. Mindy fights it.

There's a reason some spells are in the restricted section.

Intergalactic pleasure-miners abduct two humans. BE+PE

Lt. Gallo attempts to regain control of the ship.

Breast & Penis expansion, alien, outerspace, action, sex.

Gina buys an expansion pack to get things even wilder.

It only happened some nights but, when it did...

A Wonder Woman fan meets Aphrodite & is transformed by her.

After Jacob asks her out, Emily's body begins to change.

Last after a week the girls get back to finish the game.

A man with nothing to live for finds a second life...

A camgirl who does transformations finds herself overwhelmed.

A couple finds a creative solution to their fertility issues.

An older couple reconnects while on vacation.

A shapeshifter reveals her abilities. Feelings are confessed.

Xulia is reunited with someone from her previous life...

Zoey is about to have the best birthday ever.

When one's partners both love what your new potion does...

A paladin in service of a Fortune Goddess makes a discovery.

A man visits Xurnami's clinic with some changes in mind...

Jen and Travis use the collar to have a fun, milky night.

His cock is magicked - will he get too big to handle? (End)

Jen buys herself a slave collar, unaware of its true power.

Submissive wife switches, uses blessed cream to edge husband.

Skyler's boyfriend got him some presents with room to grow.

Hyper hung futanari Valerie Song takes a yoga class.

Hyper hung futanari Valerie Song enjoys some brunch

A genie encourages two people get know each other better.

Inalu falls into another world and undergoes transformations.

Sometimes a demonstration is the best way to make a sale.

A man saves a witch as she grants him his deepest desire.

A hypnotherapist finds out her new client can bend reality.

A man who wants power to kill witches ends up becoming one

Tyler wakes up on the first day of the reality shifting game.

Wishing fountains sometimes do grant wishes.

A stranger teaches some people to respect books.

Sarah, Vi, and Lily throw an interesting Halloween Party.

A bored stranger plays a game with a couple in a mall.

A girl inherits a very unusual condition.

Ben claims Bethany, and begins her change as well.

A semi-triumphant return!

Ben meets 15226, for the first - and last - time.