I have no idea, it would not surprise me if you find a million emotes spammed in the span of a few minutes. Several people caught by the clown and the clown himself were definitely spamming.
For some clarity, the runechat emote system was all that was working for a period of several minutes, the chat window had already gotten frozen.
It might have been because someone decided to finally loop a *fart macro, or because of the sheer volume of emotes sent by several players, I have no idea honestly, the game wasn’t registering much information on screen.
While other players contributed to the spam, this player was responsible for 1400 of the 1700 farts and was definitely using an external macro to spam them based on logs.