Also, I'm pretty sure I've said this before, but I'll say it again:

Part of your job as a senior is to tell your juniors about your fuckups. The embarrassing cringe reckless and lazy bullshit that you did when you were new, and the various times you brought down Prod. We ALL did it sometime. And then tell them: the moment you realized you fucked up, I know, the impulse is to try and cover it up, but don't do it. Come to the seniors you trust, and they'll help you unfuck it, and fight management tooth and claw like mamma and pappa bears to defend you from any shitheads in management. Because that's what our seniors did to us.

@JessTheUnstill
And the most important thing here, especially if "formalized" in a Fuckup Night, is that a Fuckup is a Fuckup, and not a "..but then I turned everything around and saved the situation".
Sharing Fuckups is to show that everyone screws up, not to brag how you saved the situation.
*intently staring at you, jon*