Historical clue formulations

• Opposite of "Yay!" — 2020-03-28
• "Get off the stage!" — 2018-10-19
• "That's terrible!" — 2014-11-15
• Expression of disapproval — 2014-10-19
• Accompanier of a thrown tomato — 2012-05-26
• Displeased spectator's cry — 2002-02-07