Not really a forum-based RP, but a tabletop one. You know Maid RPG? Yeah, that one.

So our GM is kind of a crazy motherfucker that allows just about any madness to happen, so you had this household of a shy robot maid with chainsaw hands, smol loli brat that's actually a vampire and lazy neko so good at stealth none of the players could ever track her down. We also tried playing as friends, but constantly got into each other's hair anyway.

Maid RPG also has a random event system you can use and I swear every session had a ninja break-in. Our last session had us finding a nuke in the basement, so naturally every player scrambled to it. The GM was super lax with the roll requirements, so we were like "Aight this'll work" with whatever we did.

Nothing worked.

We tried de-fusing it thrice, I tried breaking the thing, we even tried talking to it out of desperation. After about 8 rolls of fucking up, the GM went "Okay, fuck this. You all decide to work together; add up all your rolls and if it exceeds my set requirement the bomb's defused."

Cue all three of us rolling the lowest possible roll we could've gotten, leading to our maids jumping on it to try and shield the master in vain as the mansion and country blew up due to our sheer incompetence.

We also never played Maid RPG again.