Napoli coach Maurizio Sarri was in a defiant mood ahead of a make-or-break title test, responding to Juventus fans' insults with a swift flash of his middle finger.
The southern Italian side currently trail Juve by four points in the Scudetto race, with five games remaining of the season.
Sunday sees the two hopefuls go head-to-head in Turin, and tensions were at boiling point prior to kick-off.
Napoli's team bus was barracked by supporters of the host team as it made its way to Juventus Stadium, but Sarri was in no mood to be intimidated.
Perched at the front of the vehicle, the coach responded by holding his middle finger up to his adversaries to brush off their insults.