Pulled a Shelly

To unintentionally "Reply to All" to an email pertaining to a sensitive and/or volatile subject matter with a direct, crass or sarcastic remark intended for everyone but the original sender. The “Reply to All” message is typically formatted in a manner that will embarrass, enrage or baffle the original sender. Alternatively, the “Reply to All” message can often be an inside joke to all recipients except the original sender leaving the original sender feeling like a douche (see also douche hat, douche face, douche nozel, douche hydrant or, on a completely unrelated topic, see hot pocket because it’s hilarious).