She doesn't have to say stop or go shave...
Just: Hey babe, be carefull with you beard please...
It just means "...use your tongue..(Not your chin)".
I shave with electric razor and I have a rough beard. Even after shaving, it still rough. Like sand paper.
I try to be carefull when daty and not scrub my chin near her sex, but sometime, like last time, I was too eager to eat that work of art...
So she told me while moaning: ".. ta barbe bb..., ta barbe..."
Thanks to her to remind me know so she could enjoy as much as I do.