The ability of a woman to fake an orgasm without her partner knowing. Or the amount of prior knowledge a person has about certain symptoms and therefore they have the ability to fake a medical or mentalproblem.
Man, Sally has fakeability, did you see her in the movie when Harry met Sally?
The ability girls and women have developed to hold several items at once in one hand. The skill has been developed due to the lack of pockets in women's clothing.
I thought she'd need multiple trips to carry her phone, keys, wallet, and Starbucks to her car since she needed the other hand to open the door, but she used her impressive girl grip to carry everything in one hand.