weatherburn
When you do a mistake. It can range from a small mistake to a really big one, but whatever the oopsie is, you can always say you've done a Weatherburn.
Me: 7+8=13
Friend: I'm pretty sure it's 15.
Me: Whoopsies, I just did a Weatherburn
Friend: I'm pretty sure it's 15.
Me: Whoopsies, I just did a Weatherburn