Google’s contributions to the April Fool’s Day shenanigans this year included a “mic drop” feature in Gmail, which replaced the Send and Archive button with Send and Mic Drop. Selecting that option inserted the animated GIF you see here, then archived and muted the thread you were replying to.
It seemed harmless enough; unfortunately some users either didn’t understand the gag or weren’t paying close enough attention, and ended up sending some rather inappropriate work-related emails.
A notable complaint from the Gmail Help Forum:
Thanks to Mic Drop I just lost my job. I am a writer and had a deadline to meet. I sent my articles to my boss and never heard back from her. I inadvertently sent the email using the “Mic Drop” send button. There were corrections that needed to be made on my articles and I never received her replies. My boss took offense to the Mic Drop animation and assumed that I didn’t reply to her because I thought her input was petty (hence the Mic Drop). I just woke up to a very angry voicemail from her which is how I found out about this “hilarious” prank.
The “feature” was removed for all Gmail users shortly before 4am, before any more damage could be done.