Okay, so this might require some setup. This kink overlaps with the idea of 'converting' lesbians or sissifying ftms or whatever, but isn't exactly the same - most manifestations of those have both a force I find unsexy and a sense of external imposition that I find pointless. This is a little different - it's all about teasing out a secret hidden submissiveness and/or feminine nature from tomboys and soft-butches that are trying to hide it.
Let's say there was this girl who tries her best to be butch - maybe she's bi convincing herself that she's a lesbian, maybe she's a feminist altgirl, maybe she's just trying to be 'one of the boys' - and she fools everybody but you. You sense something, physically - the inherent softness of her face, the swell of tits and hips and ass hidden under baggy or flattening clothes - and behaviorally - the stifled giggle, the suppressed sway - that let you know that the macho routine is an act, or at least not all there is. And you get determined to seduce it to the surface. She's nervous and reluctant at first, but with gentle but firm encouragement, she gradually yields - forced grunts turn to girlish moans, menswear falls to reveal a female body, and she allows herself to accept what was there the whole time. Even if it's only when she and you are alone together.
Let's say there was this girl who tries her best to be butch - maybe she's bi convincing herself that she's a lesbian, maybe she's a feminist altgirl, maybe she's just trying to be 'one of the boys' - and she fools everybody but you. You sense something, physically - the inherent softness of her face, the swell of tits and hips and ass hidden under baggy or flattening clothes - and behaviorally - the stifled giggle, the suppressed sway - that let you know that the macho routine is an act, or at least not all there is. And you get determined to seduce it to the surface. She's nervous and reluctant at first, but with gentle but firm encouragement, she gradually yields - forced grunts turn to girlish moans, menswear falls to reveal a female body, and she allows herself to accept what was there the whole time. Even if it's only when she and you are alone together.