Skirt Steak Share definition Flag Excessive or extreme sexual activity that leads to a female's labia looking like a thinly sliced flappy piece of beef. Scott's old skank asked if he was hungry for a piece of her skirt steak. Skirt Steak by marinate n serve March 4, 2005 0 0 Get merch Get the Skirt Steak mug. Buy Now — $32.95 See more merch