The parasite forms May more

I sneer.
"Pff, you may have hips but your ass is still flat as fuck hahaha! Aah well this is all fine, but I might find myself another host to mate. I don't know if you're worth my massive cock..." I tease, getting up like I mean to leave.

The symbiote inside you is in a mix of panic and offense. As a result, your whole body exudes heat, as to express its stress. Your pussy is gushing, caused by its stimulation... You feel another weight on your lower half, as your ass is expanding. It's growing in a matter of seconds, getting juicy and plump. It would put any pornstar to shame and it wobbles at your every step...

May pouts again as you once again 'insult' her by calling her ass flat as fuck, before her pouting shift to panic as you stand up as if you mean to leave. "No wait don't leave sir~MMMM YESSS~ She says, before shifting to sluttily moaning, as the symbiote within her panics and feels offended. So in order for you to not leave, and proof it's slutty worth it causes May's body to heat up, make her pussy start gushing because of the massive amount of sexual stimulation. And before long May feels her lower half gaining extra weight again, as the symbiote causes her ass to expand rapidly. This causes her pants to tear, as within seconds a juicy and plump ass that would any pornstar to shame is created. It's so big that it wobbles with every step May would take. "See sir, my ass is totes big!" She says, as she starts to bend over; ass facing you.

"Oh fuck, it is..." That's it, I'm convinced. Of course my insults were meant to trigger a reaction from May's parasitic self and she has been super receptive. To the point where I think I found my perfect mate. This massive ass is hypnotysing and triggers a strong reaction in my body, as I feel my muscles getting bigger and my breath getting deeper...

I kneel in front of her jiggly ass, and without a hint of hesitation, I extend my long tongue, starting to lick her asshole directly. It had the stench of her body kept in this tight suit, which I couldn't like enough...