Carrie gives herself some beef

*hey there, this is my first time writing here, but not my first time writing in general. feedback is greatly appreciated*

You groan as you unload into Carrie's mouth, your cock twitching and throbbing as you shot several ropes of cum into her. Despite the several orgasms from the night before and the fact you just woke up, you certainly felt like you came a lot. You leaned your head back, panting in the afterglow of your orgasm as Carrie swallowed your load, letting out a satisfied sigh as she started to crawl up on top of you.

"So...what did you...uh..." You were about to ask the obvious question, but as Carrie loomed over you, you got your answer.

Her arms were planted on either side of your head, and you saw them fill out little by little. Biceps growing larger as Carrie bit her lip, stifling a moan of pleasure. "Fuck...this feels so good. I may need to focus on this from now on~" You watched in awe, your cock somehow twitching back to life as Carrie sat up, sitting on your chest, and you were shocked as you felt her get heavier.

She finally stopped growing, giggling like a school girl as she sat on your stomach. "Damn, look at me." And you certainly did. She looked like a full fledge workout nut. Her abs were well defined and tight, her arms were larger, with bulging biceps, and her legs, that were sitting on either side of you, felt like they could probably crush you.

Carrie lifted an arm, flexing it, watching her bicep bulge even more. "Damn, this feels great. I can tell you like it too~" You blushed as Carrie pushed her ass back against your raging boner, making you shiver slightly. "Well, I wanna test something first before we have some more fun. But, given how you are reacting to me, I think you're gonna enjoy it no matter what."

Now your curiosity, and arousal, were maxed out. "What did you have in mind?"