Great Britain's cyclists won the men's team pursuit gold - giving Sir Bradley Wiggins a fifth Olympic gold and a British record eighth medal overall.
It would only be right to celebrate this enormous victory with a big night out for the men involved.
But when they came home after a night of drinking, they arrived to this note.
It reads: "To the team pursuit men...CONGRATULATIONS!!
"As we're guessing you're probably gonna be drunk by the time you read this, and a few of you have already come into our room accidentally - just a friendly reminder that THIS IS NOT YOUR ROOM. So please don't try and get in at 4am.
"Love, the girls x."
The message also ends with a handy arrow pointing them in the direction of their room. Lols.