Forza Inter! Forza Milan! Forza… Twitter?
Inter Milan will host AC Milan in the Derby della Madonnina on Sunday, and Twitter is already lighting up.
Both sets of fans are encouraging their own team, and both are taking shots at each other.
And for added spice, there's the complicating factor of the Scudetto race between AC Milan and Juventus.
Inter won the first league matchup this season 1-0.
It should be an interesting weekend in Serie A. Before we get there, here are what some of the fans are saying ahead of the big derby.