To have one's gak snatched, one would have had to have the goo that holds the brain in place, gak, taken, or snatched, from one's cranium, resulting in death; usually involved in black-on-white crime.
Yo bitch you best watch out! He gon' snatch yo' gak!
This is a strange term, to snatch a gak; strange, but wonderful!
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.