Like the googly, the flipper is yet another weapon in the leg-spinner's armoury.
Rather than turn away from the bat like a normal leg-spinner or towards the batsman like a googly, the flipper skids on low and fast after pitching.
You could describe it as a back spinner - and like the "wrong'un", it takes plenty of time to perfect.
The ball is "squeezed" between the thumb and fingers in a way so it spins backwards and skids on low and fast with under-spin after hitting the pitch.
Hold the ball like a normal leg-break with the top joints of the index and middle fingers are across the seam.
Unlike the leg-break and googly, it's the thumb that does most of the work. Imagine you're clicking your fingers when you release the ball.
The ball should be rotating in a clockwise direction with the seam facing the batsman.