The teeth at Luna Park have been blacked out in honour of Collingwood's 125th Anniversary.
The Magpies officially mark the occasion when they take on Carlton at the MCG tomorrow.
"The 6th May 2017 marks the 125th anniversary of the first game played by local Australian Rules football club, The Collingwood Magpies. In a gesture of fond recognition of the rough and ready (and extremely loyal) Magpies fans, Luna Park and Channel Nine's The Footy Show' have decided to blacken out Mr Moon's teeth for the weekend," the teams at Channel 9 and Luna Park say.
"Shane Crawford and a team of workers (well mainly the team of workers), spent an entire day working on Mr Moon's famous smile."
If you head down to St Kilda to check it out, The Footy Show have asked people to send photos to Facebook.com/AFLFootyShow.