Possible Clues:

• Confession about the last piece of cake
• Sheepish reply to "Where's the rest of the pizza?"
• Response to "Where did the last slice go?"
• Possible answer to 'What happened to that last slice of cake?'
• Possible response to 'Where's the beef?'
• Sheepish response to 'Where did the last cookie go?'
• Disappointing reply to "Where's the last chocolate truffle?"
• Disappointing reply to 'Where's the last chocolate truffle?'
• Unwelcome response to 'Where's the leftover pizza?'
• Unwelcome response to "Where's the leftover pizza?"