AITA for calling out an annoying and weird colleague in an all-staff email?

A new grad, just two weeks into his first office job, got hit with bizarre bathroom policing from an IT colleague named Mary. She repeatedly warned him not to “pass solids” in the ground-floor toilet—complete with sniffing checks outside the stall.

Things exploded when Mary sent a company-wide email blaming “new hires” for increased solid-passing in that toilet. He fired back with a reply-all denying it and telling her to say it to his face. Now he’s facing an HR meeting about his “communication skills,” terrified he’ll get fired over the drama.

‘AITA for calling out an annoying and weird colleague in an all-staff email?’

The odd encounters started right away on his induction tour:

The tipping point came via email:

Mary’s behavior screams inappropriate—sniffing stalls and targeted warnings could qualify as harassment or invasion of privacy. There might be a plumbing issue explaining the “rule,” but her enforcement is way over the line.

That said, reply-all blasts are career landmines, especially as a newbie. They escalate personal beefs publicly, embarrassing everyone and painting you as hot-headed. Professional norms demand private channels: talk to Mary directly, loop in a manager, or go to HR about feeling targeted.

The HR meeting likely focuses on your email tone, not bathroom habits. Own the misstep, apologize for unprofessionalism, explain the frustration calmly, and pivot to how Mary’s actions made you uncomfortable. This shows maturity and could flip the script toward addressing her weirdness properly.

Lesson learned: offices have quirks (and quirky people), but venting publicly rarely wins. Document odd incidents quietly and escalate through chains next time.

These are the responses from Reddit users:

Opinions mostly landed on YTA or ESH, agreeing Mary’s creepy but the reply-all was a rookie mistake that could cost him.

Many called the public call-out unprofessional and risky:

Several went ESH, acknowledging Mary’s insanity but stressing better handling:

A few speculated on reasons or kept it light:

One lone NTA:

Consensus leans toward the new guy mishandling a valid grievance—Mary’s obsession is creepy as hell, but blasting reply-all turned him into the problem child. HR chats rarely end careers over one email, but it’s a wake-up on office etiquette.

Ever dealt with a quirky coworker like this? What’s the wildest unspoken office “rule” you’ve encountered?