The word "aaaand" is a way to link or connect ideas or thoughts together. It is often used to transition between different parts of a conversation or to emphasize a point. Full definition
aaaand now following you on Snap:) This smoothie looks perfect — I could drink one of these for breakfast any day. (makingthymeforhealth.com)
I imagined what it would be like to live in one, and throw fabulous dinner parties... aaaand then the cold breeze hit us and snapped me back into reality. (allysoninwonderland.com)