I went on a month long backpacking trip when I was 16 with an organization called NOLS. It was good fun and I learned quite a bit
My trip leader was Laura Ordway and she had this great phrase:
Boje the sequence
When you "boje the sequence" you messed up. You did something in the wrong order, or didn't do a step, and it has effects on other steps in a process. I'm not sure whether part of the definition includes that it's friendly, or if that was just Laura's way, but it's something you can say to a friend who has messed up and it has an undertone of "It's OK, I'll help make it right". I looked around and didn't see that on the internet, so I thought I'd include the knowledge here in case anyone else needs a good phrase like this.