It doesn't really have an exact definition. "Boy" and "girl" are arbitrary categories society puts people in. It's up to the person themselves to determine if they fit one or not.
I'm just saying that you can fit one and still not like gendered assumptions/stereotypes etc.
I'm trying to clarify here, pls let me know if I'm wrong
you're saying that "girl" is a category determined by society (with stereotypes, like mops floors, etc.?) and people who do fit this category are girls, and people who don't, aren't girls?
Well I think "mops floors" is more of a gender role (which are bullshit of course), but yeah that's the basic idea - things that are considered characteristics of a girl.
Since people are complex and generally don't neatly fit each other's assumptions, (cont.)