Grab her and throw her on top of Piper.

Jumping away from Piper's ****, you grab the black girl from behind you and toss her, rump first into her friend. Both girls let out sqeals of surprise as they collide with each-other. "Piper!" Iris shouts as she watches her girlfrend fall beneath her friends cushiony rear end.

With lightning speed you cuff Pipers arms to her ally's legs and vice versa leaving poor piper's face trapped beneath her friends cheeks, though she probably doesnt mind too much. "Hur hucks hakes Amger!" Piper cursed beneath her heart shaped prison. Which presumably translated into "For fucks sakes Amber!" Which leaves only two robbers to capture.