Possible Clues:

• Water down
• Make thin or thinner
• To have been fed so late may make one weak
• Make thinner
• You were fed so late to make you thin
• After 10 the meal you had could only make you thin
• Sounds as if you had a meal a couple of hours before midnight to make you thin
• If you ate so late it might make you lose weight
• The meal you were given at 10 o'clock only could make you thinner
• Reduce in strength