What does "Flippety-flip" mean?
Source: Sword Art Online Progressive Vol.02.“…That’s true. And the fight isn’t over yet,” I said, this time at an audible volume. [...] He smiled gleefully at my response. “That’s right, that’s the spirit. You never know how your hand’s going to play until you turn over that river card. So shall we get down to it? Flippety-flip!”