Come on and Get Your Kicks (8121 words) by Dira Sudis
Fandom: Marvel Cinematic Universe
Warnings: No Archive Warnings Apply
Relationships: Steve Rogers/Tony Stark
Characters: Tony Stark, Steve Rogers
Additional Tags: Feminization, Crossdressing, Dirty Talk, Shame in Sexual Desires, The Manifest Difficulty of Staying Ashamed of Anything When Tony Is This Excited About It, Fluff and Smut
"At the end of the day, you just want to be my pretty little girl, is that it?"
Steve surged up to wrap his arms around Tony, kissing him with the kind of filthy fervor that Steve usually reserved for you could have died or I haven't had an orgasm in 36 hours.
So, all right then. Hypothesis confirmed.