Used when teasing another person. You want them to think you mean yes when really you mean no. Or vice versa. It's a great phrase to use, when asked a serious question, to lighten the mood. Or if you're already teasing, to win the battle and keep them guessing. It's also a good way to prevent the end of a conversation and begin a new, long one.
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.