You Sissygasm Hard, Too Hard

I cum like I never have before from my rear penetration. "Fuck!" I scream as I explode inside my girlfriend. My body shudders in unending pleasure and my ass tightens around the massive cock inside me. I can't even stop the instinctual motion of bouncing on Steph's mammoth inside me. I know I should stop, but I can't. Then I feel her start to bulge.

"Oh God!" She screams, cumming in unison with me. She grabs around my chest as she pulses inside me. First I feel the condom fill, then as her member pierces me to the hilt, I feel pressure build to a burst and the squishy feeling of cum fill inside me. "Shit! Your ass feels so good!" She moans as she plasters my insides. Its so much jizz that it spills out my crack even as she is still bursting inside me.

Then I notice a new feeling. The hands on my chest feel so sensitive, that's when I see a pair of breasts sprouting from my chest and filling in around her tender fingers. My hips start to shift and I feel my butt cheeks spread against Steph's hips with a pronounced jiggle. Her hands feel up my new-formed tits, almost as big as my girlfriend's, as if shocked and interested. The kneading makes turns me on I'm a new way deep down in my core. "Oh, my gosh. I think it broke." She says. She pulls away and cum starts to flow like a faucet out of my asshole. "I'm sorry, my loads are pretty large."

"Aww... I was so close." Says Lindsey, staring down at my shrinking penis. It looks a few inches smaller and slightly thinner as it recedes due to the lack of cock in my ass. "You were supposed to make me cum, but I guess you are too much of a butt slut." She notices me for the first time with a shocked look. "Wow! You look cute." I feel my face and blush. Its softer and more feminine. "I kind of like it... But about this..." She picks up my now 4 inch flaccid penis. "Can we keep going?"

"Yeah, I'm still fucking hard and I've already broken the condom. She's close anyways." Says Steph, dropping the broken condom and rubbing her cum covered cock out on to my ass cheeks. Each stroke spurts more creamy jizz up onto my thinning backline. I bite my lip as I stare at her leaking cock, relishing as she runs jizz along my gaping asshole. Should I keep going or try something else?

"Please baby." Pleads Lindsey.