One who is a jingle nuts is a person that does something so stupid and asinine that you have no better word to call them. Pretty much synonymous with calling someone a clown. They have no idea whats going on and are the same sort of person that walks around with shitty toilet paper stuck to their shoe.
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.