When a guy has really lady like fingers he is said to have bitch fingers, implying that he is either a fag who moisturises or hasn't done a day's work in his life. Bitch fingers are common among piano players (but not compulsory).

someone who is sexy beyond mean

When at work, the finger you use when pointing to the "pet" person or "ass kisser" to whom you generally assign the easiest tasks, indicating that they are your bitch.

Your fourth finger. It's like flipping the bird with your fourth finger. By doing this, you are calling someone a bitch...

A capo for a guitar.