Note: "Spoiler Alert" should come BEFORE you actually spoil something.
Comedian Kitty Flanagan made that mistake by stating that Santa doesn't exist multiple times during a 6:30pm broadcast of Channel 10's "The Project" in Australia.
"Oh sorry — spoiler alert," she said. "If you have kids in the room, you should probably have covered their ears and gone 'la, la, la!' or something."
Sure, maybe not that many young kids who still believe in Santa are watching the evening news, but enough were to cause a whole slew of complaints online from angry parents.
The show then apologized on air and even had "Santa" on the show for an interview about gearing up for Christmas.