Mrinalini Dhir (@psy_me) made up this word in her smaashooing period. It's supposedly very deadly because I, the Author and Submitter, had an entire 10 mins conversation about this and walked away with nothing!
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.