Flicking your pussy is a phrase used in a sentence to show excitement about something, to be really hyped. It also could refer to be turned on by something or someone. It refers to get your pussy to move rapidly, suddenly, or jerkily out of joy, excitement or desire and this act could also be achieved with sexual intercourse.
CASE 1
A: You heard that new Rihanna song? Sis, that shit's a BOP.
B: Seriously sis? Well come thru, lemme hear.
A: YASS HUNTY! I flick my pussy to that song on RE-PEAT!
CASE 2
A: Gurl, have you seen Cassie's new boo?
B: Yes ma'am, ooh he's so fine. And I heard he's hung AF! I need to know her secret.
A: Same here boo! Oh, I'd let him flick my pussy any day sweetie.
B: I'm gagging!