“Ugh! I don’t understand, these jeans fit last week!” She complained.
“I’m sure they just shrunk in the wash or something?” You lie, you knew the truth.
That potion you got online really is working, your girlfriend’s ass is growing daily… this confirms it, her huge butt can’t even fit in her largest jeans anymore. It has only been a few days since you started giving her doses, yet here she is, busting out of her jeans.
“No… I’m bigger… I can tell…” She complains but it doesn’t quite sound as though she is angry anymore.
Your eyes haven’t left her round butt since she started the fight with the denim.
“I think you don’t mind though…” She says in a sultry voice.
“Wha… Huh?” You stammer.
“Don’t play dumb with me…” She backs up, her ass now pressing into your crotch. She looks over her shoulder into your eyes, a fire within hers burning bright.
You gasp as you feel her start to gyrate her ass against you. Her breathing becoming shallow, much like yours.
“I found the potion…” She whispers before planting her plump lips against yours.
You start to feel panic but are quickly soothed by her hand on your cheek. She breaks off the kiss.
“I thought to shout at you but… I found the thought of growing… getting bigger, for you, very exciting.” She takes your hand and places it on her wide hips. “So, I thought let you have your fun… Grow a little…”
A slap echoes in the room. She spanks her ass.
“But you were too light on the dosages, I needed to be bigger quicker…” She pulls a handful of vials out of her pocket. “I think these might help?”
Your rock-hard cock pulses as she still grinds against you. She feels your excitement and giggles.
“Here…” She steps forward, “Feel…” She places your hands on her cheeks. “Feel me grow…”
Beneath your hands you can feel it, her growing, each second your fingers are getting spread further apart, your hands being pushed away from each other as she grows wider.
“Oh my god… So big…” You manage to gasp.
“You haven’t seen anything yet…” She lets out a moan.