Possible Clues:

• Play-ending arcade message
• Words a pinball wizard hates to see
• Screen message after losing at Galaga, say
• Screen message you'd rather not see
• Message that basically tells you to get a life?
• Message to a loser
• Disappointing screen message
• More than willing at first to make time up?
• Message seen after 13-Across dies
• Arcade ending