First Toni Kroos criticised Pierre-Emerick Aubameyang over his "nonsense" goal celebrations. Then the Arsenal captain hit back. And now Mesut Ozil has got involved.
This is how the bizarre Twitter spat has gone down.
Real Madrid and Germany midfielder Kroos took aim at Aubameyang and Barcelona forward Antoine Griezmann earlier this week, criticising them both for their choreographed goal celebrations.
Speaking on the Einfach mal Luppen podcast via Sport Bild, Kroos, 30, said: "If there are rehearsed dances or choreographies, I find it very silly.
"Aubameyang once celebrated and took out a mask - that's where it ends with me.