Occurs when a female places purse strap between her breasts causing clearly defined seperation of the titties, abnormal tightness of surrounding shirt material and sore necks for the double-taking males that are within sight. In addition, a titty splitty allows males to better approximate the size and shape of a woman's breasts.
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.