If you could control a Trans boy's cup size, like mine, what would you do? How would you trigger it to grow? Or would you just grow them right away for fun?
Hmm, I would either use an app on my phone, cup them with my hands, or just simple magic
1: Connect the app to your body, and use it to modify you. Using a slider to make them more full, contain milk. Imagine you're minding your own business, and then your binder and shirt get more and more tight then rip because I decided you'd look better bigger, more full, like a cow
2: Imagine you're asleep, and I just touch them, and when you wake up, they're so full and heavy. You couldn't possibly bind them. Any time, anywhere, scared of the idea that I'll be sneaking up right behind you just to cup you in public
3: Maybe I place a spell on you, so every time you say you're a "boy, man, guy", they swell, just a little bit, every time you say your chosen name, they swell more. Maybe even if someone else says your chosen name or used "he/him" pronouns on you, they grow.
Either way, you're forced to either give in to being a girl or let the world know when no clothes can fit your massive breasts
I'd rather the growth take their time than instant growth, so you can only watch, feel, and squirm in horror as they're growing bigger and you just can't stop them. You're "boy-like" existence is more than enough reason to make you expand
I love all of these, either way you're gonna look so cute and confused.
Even cuter is the idea you would beg for me to fix it, pleading "I don't want to be this big!" or "I'm a man! I can't have breasts this huge!"
Or maybe, you'd beg for them bigger, beg for me to milk you because they're too full
I wonder what your friends and family would think and say to see you like that?
What would you do if I started make your breasts swell, hm?
And what other ways could you see me making them bigger?
I like this quite a lot, you guys should ask more questions; don't worry about spamming questions or requests either, I love hearing from people interested in my stuff