Luis Suárez was booked with a yellow card against Valencia on Sunday for a ridiculous reason.
In the final minutes of the first half, Valencia keeper Diego Alves made a great save off a Lionel Messi header, and full-back Guilherme Siqueira cleared the ball to a corner as he was challenged by Gerard Piqué, who barely touched the player's leg. Siqueira then wasted almost two minutes being attended by the medical team for an imaginary injury, a strategy repeatedly used by the Valencia players during the entire game.
As Siqueira was being carried off the field (just seconds before sprinting back to the pitch magically healthy again), Suárez approached referee David Fernández Borbalán and said a few words.