This is another way to say the gang called the Crips. It represents that by the 3 meaning C, the third letter in the alphabet. The rest is pretty simple to figure out at that point.
Guy 1: "Yo, do you wanna join the 3 18 9 16 19?"
Guy 2: "What is that?"
Guy 1: "You have to join it then I'll tell you"
Guy 2: "Fine, sure I'll join"
Guy 1: "Why would you want to be apart of the crips that's so dumb"
Guy 2: "I hate you"
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.