1st observed by myself in the movie, "Bachelor and the Bobby Soxer", featuring Cary Grant with Shirley Temple as the high schooler who's out to "get him". Unfortunately for her plans, her big sister is a local municipal judge. Laughs ensue following his lecture at an assembly at her high school. The term is used as they are just about to exit the house on their way to a big community picnic. the answer to the question of whether she was ready for the big day and how did she feel was, "Hookey-dookey".
Are you ready to go?
Ready.
How're you feeling?
Hookey-dookey
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.