Seriously, that looks like it hurt.
Sometime around Anno Domini 1530, a man named Lucas Cranach the Elder got inspired to paint something truly amazing. In fact, it may very well be the first appearance of this phenomenon: the ninja babe. In his painting Judith Victorious, some totally hardcore girl (Judith was probably her assumed identity, for her true name was likely unspoken except by the Ninja Queen of her clan) is holding a sword and standing next to a table on which is the head of some idiot who tried to make a move on her. He probably never even started heading for "first base," because she clearly took care of him swiftly and easily. Idiot. Even a fancy-dressed ninja babe is still ready to rock when the time is nigh. (Though Cranach forgot to give the ninja babe a mask, I decided to help him out and added one myself.)