I am technically not a lesbian, but of what I understand about lesbian culture, there's a tendency to think if I don't shave tonight then I won't be tempted to get freaky and for this to turn into a one-night stand. And this is followed by a wild night of extra-curricular activities, only she knows sometimes you don't shave.
I point out that if she ghosts you, that's about her issues, not about the conditions of your leg hair.
Anyway, this fit is showing were prepared for all contingencies, and expecting a very good evening.