Well...I'm not sure if it's a proverb or not. But apparently calling someone a bee is a good thing.
It is said that someone is a bee when that someone is optimistic and sees the good in everything. Even when a flower is covered in insects and all sorts of nasty things, a bee still manages to see the sweet honey at the heart of the flower. Like a bee, this person sees the good at the heart of all matters.
Be like a bee :)