Back in 2012, when he was at Real Madrid, Jose Mourinho - in his usual demeanour - lambasted the referee after his team were bundled out of the Champions League semi-final by Barcelona.
Since then, the term UEFAlona has stuck with fans. However, it's only used by opposing fans to show their distaste when Barcelona seem to dominate and emerge victorious.
Barca fans on Twitter are excited about the rebirth of the Uefalona tag after the club signed five good players in the transfer market - including Lewandowski.
Ezenwanyi Camp Nou: "We are officially back to being the most hated club in the world. Barca is back, thank your Laporta and Alemany. Uefalona loading."
Shubham: "We went from Laughing Stock to Hated Stock. Uefalona js back"
ANDAH: "Once rival fans start calling Barcelona "UEFAlona" on the TL, I will shed tears of joy cos that means Barca is really back."
tripple: "All I need is the Uefalona accusations to come back and I can rest in peace."
