Four pages of just the word “SSSHHHHIIIIITTT.”
Let’s be real, that’s a pretty fair reaction.
Also, I may not be certain that Jade knew about the troll taboo surrounding buckets when she gave that pail to John. She never discussed it with the trolls on screen, but she had a lot of conversations with them that we didn’t see. But I am damn sure that she aimed it at Karkat’s head when she was deciding where to let the portal out.