Chelsea's social media team got the drill. The Blues are back at San Siro for the first time since 2010, but that stretches back to 1999 for a game against AC Milan.
Even the younger fans will recall the game, the scene of one of the club's most famous goals, and retrospectively, now one of the most common chants too. As Dennis Wise was sent through on goal, scoring with a brilliant finish with less than 15 minutes to go, Chelsea fans were sent into pandemonium, and they haven't stopped talking about it.
Be it in the away end at Turf Moor or more aptly from the Shed End in a Champions League game, Blues fans always sing about that moment, and now, on the day of a huge test and a brilliant away occasion in Europe, the world is once again being reminded of Wise's finish.