Best definition
1. The most amazing girl you will ever have the pleasure to meet. Outrageously hot! Way cool! A burning beacon

of raw sexuality
2. A track by the French band Air.

See that girl there?

She’s MY wondermilkybitch.
WonderMilkyBitch: define #2

The worst nightmare of a girl you could ever meet. Boys you ever felt hounded???? How about cooking your dinner and the girl is on the phone wanting to know where the f*** you are?
That wondermilkybitch lost it… i’m only cooking my dinner!