Fleinflex Share definition Flag While having sex: The process of putting a fly up your girlfriend's bum and then "flexin on that bitch". Works with man too. Bro A: Yo bro i pulled a fleinflex on mah bitch yesterday Bro B: oh damn Fleinflex by barsch07 May 28, 2019 0 0 Get merch Get the Fleinflex mug. Buy Now — $32.95 See more merch
