Cazorla has since been forced to apologise. Speaking on his official Twitter account, he claimed he could not see the piece of paper in question.
However, the picture had already made a significant impact. The photograph created a social media storm: Arsenal fans were delighted; Spurs supporters incensed. Cazorla's apology won't stop him being heralded as a hero by the Arsenal faithful. For them, winding up Spurs is a way of life.
Over the next few slides we look at some of the best pranks Arsenal have ever played on Tottenham.